libghc-semigroups-doc 0.18.0.1-1build1 / usr / share / doc / libghc-semigroups-doc / html / src / Data-List-NonEmpty.html

This file is indexed.

/usr/share/doc/libghc-semigroups-doc/html/src/Data-List-NonEmpty.html is in libghc-semigroups-doc 0.18.0.1-1build1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below. 

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ -->
<title>src-ghc7/Data/List/NonEmpty.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__) &amp;&amp; __GLASGOW_HASKELL__ &gt;= 702</span>
<a name="line-4"></a><span class='hs-cpp'>#if defined(MIN_VERSION_hashable) || __GLASGOW_HASKELL__ &gt;= 708</span>
<a name="line-5"></a><span class='hs-comment'>{-# LANGUAGE Trustworthy #-}</span>
<a name="line-6"></a><span class='hs-cpp'>#else</span>
<a name="line-7"></a><span class='hs-comment'>{-# LANGUAGE Safe #-}</span>
<a name="line-8"></a><span class='hs-cpp'>#endif</span>
<a name="line-9"></a><span class='hs-cpp'>#endif</span>
<a name="line-10"></a>
<a name="line-11"></a><span class='hs-cpp'>#ifdef __GLASGOW_HASKELL__</span>
<a name="line-12"></a><span class='hs-cpp'>#define LANGUAGE_DeriveDataTypeable</span>
<a name="line-13"></a><span class='hs-comment'>{-# LANGUAGE DeriveDataTypeable #-}</span>
<a name="line-14"></a><span class='hs-cpp'>#endif</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__) &amp;&amp; __GLASGOW_HASKELL__ &gt;= 704</span>
<a name="line-17"></a><span class='hs-cpp'>#define LANGUAGE_DeriveGeneric</span>
<a name="line-18"></a><span class='hs-comment'>{-# LANGUAGE DeriveGeneric #-}</span>
<a name="line-19"></a><span class='hs-cpp'>#endif</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__) &amp;&amp; __GLASGOW_HASKELL__ &gt;= 708</span>
<a name="line-22"></a><span class='hs-comment'>{-# LANGUAGE TypeFamilies #-}</span>
<a name="line-23"></a><span class='hs-cpp'>#endif</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-cpp'>#ifndef MIN_VERSION_base</span>
<a name="line-26"></a><span class='hs-cpp'>#define MIN_VERSION_base(x,y,z) 1</span>
<a name="line-27"></a><span class='hs-cpp'>#endif</span>
<a name="line-28"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-29"></a><span class='hs-comment'>-- |</span>
<a name="line-30"></a><span class='hs-comment'>-- Module      :  Data.List.NonEmpty</span>
<a name="line-31"></a><span class='hs-comment'>-- Copyright   :  (C) 2011-2015 Edward Kmett,</span>
<a name="line-32"></a><span class='hs-comment'>--                (C) 2010 Tony Morris, Oliver Taylor, Eelis van der Weegen</span>
<a name="line-33"></a><span class='hs-comment'>-- License     :  BSD-style (see the file LICENSE)</span>
<a name="line-34"></a><span class='hs-comment'>--</span>
<a name="line-35"></a><span class='hs-comment'>-- Maintainer  :  Edward Kmett &lt;ekmett@gmail.com&gt;</span>
<a name="line-36"></a><span class='hs-comment'>-- Stability   :  provisional</span>
<a name="line-37"></a><span class='hs-comment'>-- Portability :  portable</span>
<a name="line-38"></a><span class='hs-comment'>--</span>
<a name="line-39"></a><span class='hs-comment'>-- A NonEmpty list forms a monad as per list, but always contains at least</span>
<a name="line-40"></a><span class='hs-comment'>-- one element.</span>
<a name="line-41"></a><span class='hs-comment'>----------------------------------------------------------------------------</span>
<a name="line-42"></a>
<a name="line-43"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-conid'>NonEmpty</span> <span class='hs-layout'>(</span>
<a name="line-44"></a>   <span class='hs-comment'>-- * The type of non-empty streams</span>
<a name="line-45"></a>     <span class='hs-conid'>NonEmpty</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-46"></a>   <span class='hs-comment'>-- * Non-empty stream transformations</span>
<a name="line-47"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>map</span>         <span class='hs-comment'>-- :: (a -&gt; b) -&gt; NonEmpty a -&gt; NonEmpty b</span>
<a name="line-48"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>intersperse</span> <span class='hs-comment'>-- :: a -&gt; NonEmpty a -&gt; NonEmpty a</span>
<a name="line-49"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>scanl</span>       <span class='hs-comment'>-- :: Foldable f =&gt; (b -&gt; a -&gt; b) -&gt; b -&gt; f a -&gt; NonEmpty b</span>
<a name="line-50"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>scanr</span>       <span class='hs-comment'>-- :: Foldable f =&gt; (a -&gt; b -&gt; b) -&gt; b -&gt; f a -&gt; NonEmpty b</span>
<a name="line-51"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>scanl1</span>      <span class='hs-comment'>-- :: (a -&gt; a -&gt; a) -&gt; NonEmpty a -&gt; NonEmpty a</span>
<a name="line-52"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>scanr1</span>      <span class='hs-comment'>-- :: (a -&gt; a -&gt; a) -&gt; NonEmpty a -&gt; NonEmpty a</span>
<a name="line-53"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>transpose</span>   <span class='hs-comment'>-- :: NonEmpty (NonEmpty a) -&gt; NonEmpty (NonEmpty a)</span>
<a name="line-54"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>sortBy</span>      <span class='hs-comment'>-- :: (a -&gt; a -&gt; Ordering) -&gt; NonEmpty a -&gt; NonEmpty a</span>
<a name="line-55"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>sortWith</span>      <span class='hs-comment'>-- :: Ord o =&gt; (a -&gt; o) -&gt; NonEmpty a -&gt; NonEmpty a</span>
<a name="line-56"></a>   <span class='hs-comment'>-- * Basic functions</span>
<a name="line-57"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>length</span>      <span class='hs-comment'>-- :: NonEmpty a -&gt; Int</span>
<a name="line-58"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>head</span>        <span class='hs-comment'>-- :: NonEmpty a -&gt; a</span>
<a name="line-59"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>tail</span>        <span class='hs-comment'>-- :: NonEmpty a -&gt; [a]</span>
<a name="line-60"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>last</span>        <span class='hs-comment'>-- :: NonEmpty a -&gt; a</span>
<a name="line-61"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>init</span>        <span class='hs-comment'>-- :: NonEmpty a -&gt; [a]</span>
<a name="line-62"></a>   <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>&lt;|</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>cons</span>  <span class='hs-comment'>-- :: a -&gt; NonEmpty a -&gt; NonEmpty a</span>
<a name="line-63"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>uncons</span>      <span class='hs-comment'>-- :: NonEmpty a -&gt; (a, Maybe (NonEmpty a))</span>
<a name="line-64"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>unfoldr</span>     <span class='hs-comment'>-- :: (a -&gt; (b, Maybe a)) -&gt; a -&gt; NonEmpty b</span>
<a name="line-65"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>sort</span>        <span class='hs-comment'>-- :: NonEmpty a -&gt; NonEmpty a</span>
<a name="line-66"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>reverse</span>     <span class='hs-comment'>-- :: NonEmpty a -&gt; NonEmpty a</span>
<a name="line-67"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>inits</span>       <span class='hs-comment'>-- :: Foldable f =&gt; f a -&gt; NonEmpty a</span>
<a name="line-68"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>tails</span>       <span class='hs-comment'>-- :: Foldable f =&gt; f a -&gt; NonEmpty a</span>
<a name="line-69"></a>   <span class='hs-comment'>-- * Building streams</span>
<a name="line-70"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>iterate</span>     <span class='hs-comment'>-- :: (a -&gt; a) -&gt; a -&gt; NonEmpty a</span>
<a name="line-71"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>repeat</span>      <span class='hs-comment'>-- :: a -&gt; NonEmpty a</span>
<a name="line-72"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>cycle</span>       <span class='hs-comment'>-- :: NonEmpty a -&gt; NonEmpty a</span>
<a name="line-73"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>unfold</span>      <span class='hs-comment'>-- :: (a -&gt; (b, Maybe a) -&gt; a -&gt; NonEmpty b</span>
<a name="line-74"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>insert</span>      <span class='hs-comment'>-- :: (Foldable f, Ord a) =&gt; a -&gt; f a -&gt; NonEmpty a</span>
<a name="line-75"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>some1</span>       <span class='hs-comment'>-- :: Alternative f =&gt; f a -&gt; f (NonEmpty a)</span>
<a name="line-76"></a>   <span class='hs-comment'>-- * Extracting sublists</span>
<a name="line-77"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>take</span>        <span class='hs-comment'>-- :: Int -&gt; NonEmpty a -&gt; [a]</span>
<a name="line-78"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>drop</span>        <span class='hs-comment'>-- :: Int -&gt; NonEmpty a -&gt; [a]</span>
<a name="line-79"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>splitAt</span>     <span class='hs-comment'>-- :: Int -&gt; NonEmpty a -&gt; ([a], [a])</span>
<a name="line-80"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>takeWhile</span>   <span class='hs-comment'>-- :: Int -&gt; NonEmpty a -&gt; [a]</span>
<a name="line-81"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>dropWhile</span>   <span class='hs-comment'>-- :: Int -&gt; NonEmpty a -&gt; [a]</span>
<a name="line-82"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>span</span>        <span class='hs-comment'>-- :: Int -&gt; NonEmpty a -&gt; ([a],[a])</span>
<a name="line-83"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>break</span>       <span class='hs-comment'>-- :: Int -&gt; NonEmpty a -&gt; ([a],[a])</span>
<a name="line-84"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>filter</span>      <span class='hs-comment'>-- :: (a -&gt; Bool) -&gt; NonEmpty a -&gt; [a]</span>
<a name="line-85"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>partition</span>   <span class='hs-comment'>-- :: (a -&gt; Bool) -&gt; NonEmpty a -&gt; ([a],[a])</span>
<a name="line-86"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>group</span>       <span class='hs-comment'>-- :: Foldable f =&gt; Eq a =&gt; f a -&gt; [NonEmpty a]</span>
<a name="line-87"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>groupBy</span>     <span class='hs-comment'>-- :: Foldable f =&gt; (a -&gt; a -&gt; Bool) -&gt; f a -&gt; [NonEmpty a]</span>
<a name="line-88"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>groupWith</span>     <span class='hs-comment'>-- :: (Foldable f, Eq b) =&gt; (a -&gt; b) -&gt; f a -&gt; [NonEmpty a]</span>
<a name="line-89"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>groupAllWith</span>  <span class='hs-comment'>-- :: (Foldable f, Ord b) =&gt; (a -&gt; b) -&gt; f a -&gt; [NonEmpty a]</span>
<a name="line-90"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>group1</span>      <span class='hs-comment'>-- :: Eq a =&gt; NonEmpty a -&gt; NonEmpty (NonEmpty a)</span>
<a name="line-91"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>groupBy1</span>    <span class='hs-comment'>-- :: (a -&gt; a -&gt; Bool) -&gt; NonEmpty a -&gt; NonEmpty (NonEmpty a)</span>
<a name="line-92"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>groupWith1</span>     <span class='hs-comment'>-- :: (Foldable f, Eq b) =&gt; (a -&gt; b) -&gt; f a -&gt; NonEmpty (NonEmpty a)</span>
<a name="line-93"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>groupAllWith1</span>  <span class='hs-comment'>-- :: (Foldable f, Ord b) =&gt; (a -&gt; b) -&gt; f a -&gt; NonEmpty (NonEmpty a)</span>
<a name="line-94"></a>   <span class='hs-comment'>-- * Sublist predicates</span>
<a name="line-95"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>isPrefixOf</span>  <span class='hs-comment'>-- :: Foldable f =&gt; f a -&gt; NonEmpty a -&gt; Bool</span>
<a name="line-96"></a>   <span class='hs-comment'>-- * \"Set\" operations</span>
<a name="line-97"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>nub</span>         <span class='hs-comment'>-- :: Eq a =&gt; NonEmpty a -&gt; NonEmpty a</span>
<a name="line-98"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>nubBy</span>       <span class='hs-comment'>-- :: (a -&gt; a -&gt; Bool) -&gt; NonEmpty a -&gt; NonEmpty a</span>
<a name="line-99"></a>   <span class='hs-comment'>-- * Indexing streams</span>
<a name="line-100"></a>   <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span>        <span class='hs-comment'>-- :: NonEmpty a -&gt; Int -&gt; a</span>
<a name="line-101"></a>   <span class='hs-comment'>-- * Zipping and unzipping streams</span>
<a name="line-102"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>zip</span>         <span class='hs-comment'>-- :: NonEmpty a -&gt; NonEmpty b -&gt; NonEmpty (a,b)</span>
<a name="line-103"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>zipWith</span>     <span class='hs-comment'>-- :: (a -&gt; b -&gt; c) -&gt; NonEmpty a -&gt; NonEmpty b -&gt; NonEmpty c</span>
<a name="line-104"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>unzip</span>       <span class='hs-comment'>-- :: NonEmpty (a, b) -&gt; (NonEmpty a, NonEmpty b)</span>
<a name="line-105"></a>   <span class='hs-comment'>-- * Converting to and from a list</span>
<a name="line-106"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>fromList</span>    <span class='hs-comment'>-- :: [a] -&gt; NonEmpty a</span>
<a name="line-107"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>toList</span>      <span class='hs-comment'>-- :: NonEmpty a -&gt; [a]</span>
<a name="line-108"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>nonEmpty</span>    <span class='hs-comment'>-- :: [a] -&gt; Maybe (NonEmpty a)</span>
<a name="line-109"></a>   <span class='hs-layout'>,</span> <span class='hs-varid'>xor</span>         <span class='hs-comment'>-- :: NonEmpty a -&gt; Bool</span>
<a name="line-110"></a>   <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-111"></a>
<a name="line-112"></a>
<a name="line-113"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Prelude</span>
<a name="line-114"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Prelude</span> <span class='hs-varid'>hiding</span>
<a name="line-115"></a>  <span class='hs-layout'>(</span> <span class='hs-varid'>head</span><span class='hs-layout'>,</span> <span class='hs-varid'>tail</span><span class='hs-layout'>,</span> <span class='hs-varid'>map</span><span class='hs-layout'>,</span> <span class='hs-varid'>reverse</span>
<a name="line-116"></a>  <span class='hs-layout'>,</span> <span class='hs-varid'>scanl</span><span class='hs-layout'>,</span> <span class='hs-varid'>scanl1</span><span class='hs-layout'>,</span> <span class='hs-varid'>scanr</span><span class='hs-layout'>,</span> <span class='hs-varid'>scanr1</span>
<a name="line-117"></a>  <span class='hs-layout'>,</span> <span class='hs-varid'>iterate</span><span class='hs-layout'>,</span> <span class='hs-varid'>take</span><span class='hs-layout'>,</span> <span class='hs-varid'>drop</span><span class='hs-layout'>,</span> <span class='hs-varid'>takeWhile</span>
<a name="line-118"></a>  <span class='hs-layout'>,</span> <span class='hs-varid'>dropWhile</span><span class='hs-layout'>,</span> <span class='hs-varid'>repeat</span><span class='hs-layout'>,</span> <span class='hs-varid'>cycle</span><span class='hs-layout'>,</span> <span class='hs-varid'>filter</span>
<a name="line-119"></a>  <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>zip</span><span class='hs-layout'>,</span> <span class='hs-varid'>unzip</span><span class='hs-layout'>,</span> <span class='hs-varid'>zipWith</span><span class='hs-layout'>,</span> <span class='hs-varid'>words</span>
<a name="line-120"></a>  <span class='hs-layout'>,</span> <span class='hs-varid'>unwords</span><span class='hs-layout'>,</span> <span class='hs-varid'>lines</span><span class='hs-layout'>,</span> <span class='hs-varid'>unlines</span><span class='hs-layout'>,</span> <span class='hs-varid'>break</span><span class='hs-layout'>,</span> <span class='hs-varid'>span</span>
<a name="line-121"></a>  <span class='hs-layout'>,</span> <span class='hs-varid'>splitAt</span><span class='hs-layout'>,</span> <span class='hs-varid'>foldr</span><span class='hs-layout'>,</span> <span class='hs-varid'>foldl</span><span class='hs-layout'>,</span> <span class='hs-varid'>last</span><span class='hs-layout'>,</span> <span class='hs-varid'>init</span>
<a name="line-122"></a>  <span class='hs-layout'>,</span> <span class='hs-varid'>length</span>
<a name="line-123"></a>  <span class='hs-layout'>)</span>
<a name="line-124"></a>
<a name="line-125"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span>
<a name="line-126"></a>
<a name="line-127"></a><span class='hs-cpp'>#ifdef MIN_VERSION_deepseq</span>
<a name="line-128"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>DeepSeq</span> <span class='hs-layout'>(</span><span class='hs-conid'>NFData</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-129"></a><span class='hs-cpp'>#endif</span>
<a name="line-130"></a>
<a name="line-131"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-132"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Fix</span>
<a name="line-133"></a>
<a name="line-134"></a><span class='hs-cpp'>#if MIN_VERSION_base(4,4,0)</span>
<a name="line-135"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Zip</span> <span class='hs-layout'>(</span><span class='hs-conid'>MonadZip</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-136"></a><span class='hs-cpp'>#endif</span>
<a name="line-137"></a>
<a name="line-138"></a><span class='hs-cpp'>#ifdef LANGUAGE_DeriveDataTypeable</span>
<a name="line-139"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span>
<a name="line-140"></a><span class='hs-cpp'>#endif</span>
<a name="line-141"></a>
<a name="line-142"></a><span class='hs-cpp'>#if MIN_VERSION_base(4,8,0)</span>
<a name="line-143"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>toList</span><span class='hs-layout'>,</span> <span class='hs-varid'>length</span><span class='hs-layout'>)</span>
<a name="line-144"></a><span class='hs-cpp'>#else</span>
<a name="line-145"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>toList</span><span class='hs-layout'>)</span>
<a name="line-146"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span> <span class='hs-layout'>(</span><span class='hs-varid'>mappend</span><span class='hs-layout'>)</span>
<a name="line-147"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span>
<a name="line-148"></a><span class='hs-cpp'>#endif</span>
<a name="line-149"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Foldable</span>
<a name="line-150"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Function</span> <span class='hs-layout'>(</span><span class='hs-varid'>on</span><span class='hs-layout'>)</span>
<a name="line-151"></a>
<a name="line-152"></a><span class='hs-cpp'>#ifdef MIN_VERSION_hashable</span>
<a name="line-153"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Hashable</span>
<a name="line-154"></a><span class='hs-cpp'>#endif</span>
<a name="line-155"></a>
<a name="line-156"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>List</span>
<a name="line-157"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Ord</span> <span class='hs-layout'>(</span><span class='hs-varid'>comparing</span><span class='hs-layout'>)</span>
<a name="line-158"></a>
<a name="line-159"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__) &amp;&amp; __GLASGOW_HASKELL__ &gt;= 708</span>
<a name="line-160"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Exts</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Exts</span>
<a name="line-161"></a><span class='hs-cpp'>#endif</span>
<a name="line-162"></a><span class='hs-comment'>-- import Data.Semigroup hiding (Last)</span>
<a name="line-163"></a><span class='hs-comment'>-- import Data.Semigroup.Foldable</span>
<a name="line-164"></a><span class='hs-comment'>-- import Data.Semigroup.Traversable</span>
<a name="line-165"></a>
<a name="line-166"></a><span class='hs-cpp'>#ifdef LANGUAGE_DeriveGeneric</span>
<a name="line-167"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Generics</span>
<a name="line-168"></a><span class='hs-cpp'>#endif</span>
<a name="line-169"></a>
<a name="line-170"></a><span class='hs-keyword'>infixr</span> <span class='hs-num'>5</span> <span class='hs-conop'>:|</span><span class='hs-layout'>,</span> <span class='hs-varop'>&lt;|</span>
<a name="line-171"></a>
<a name="line-172"></a><a name="NonEmpty"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyword'>deriving</span>
<a name="line-173"></a>  <span class='hs-layout'>(</span> <span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span>
<a name="line-174"></a><span class='hs-cpp'>#ifdef LANGUAGE_DeriveDataTypeable</span>
<a name="line-175"></a>  <span class='hs-layout'>,</span> <span class='hs-conid'>Data</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span>
<a name="line-176"></a><span class='hs-cpp'>#endif</span>
<a name="line-177"></a><span class='hs-cpp'>#ifdef LANGUAGE_DeriveGeneric</span>
<a name="line-178"></a>  <span class='hs-layout'>,</span> <span class='hs-conid'>Generic</span>
<a name="line-179"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ &gt;= 706</span>
<a name="line-180"></a>  <span class='hs-layout'>,</span> <span class='hs-conid'>Generic1</span>
<a name="line-181"></a><span class='hs-cpp'>#endif</span>
<a name="line-182"></a><span class='hs-cpp'>#endif</span>
<a name="line-183"></a>  <span class='hs-layout'>)</span>
<a name="line-184"></a>
<a name="line-185"></a><span class='hs-cpp'>#ifdef MIN_VERSION_hashable</span>
<a name="line-186"></a><a name="instance%20Hashable%20(NonEmpty%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Hashable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Hashable</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-187"></a><span class='hs-cpp'>#if MIN_VERSION_hashable(1,2,0)</span>
<a name="line-188"></a>  <span class='hs-varid'>hashWithSalt</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-varop'>`hashWithSalt`</span> <span class='hs-varid'>a</span> <span class='hs-varop'>`hashWithSalt`</span> <span class='hs-keyword'>as</span>
<a name="line-189"></a><span class='hs-cpp'>#else</span>
<a name="line-190"></a>  <span class='hs-varid'>hash</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hash</span> <span class='hs-varid'>a</span> <span class='hs-varop'>`combine`</span> <span class='hs-varid'>hash</span> <span class='hs-keyword'>as</span>
<a name="line-191"></a><span class='hs-cpp'>#endif</span>
<a name="line-192"></a><span class='hs-cpp'>#endif</span>
<a name="line-193"></a>
<a name="line-194"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__) &amp;&amp; __GLASGOW_HASKELL__ &gt;= 708</span>
<a name="line-195"></a><a name="instance%20Exts.IsList%20(NonEmpty%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Exts</span><span class='hs-varop'>.</span><span class='hs-conid'>IsList</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-196"></a>  <span class='hs-keyword'>type</span> <span class='hs-conid'>Item</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-197"></a>  <span class='hs-varid'>fromList</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span>
<a name="line-198"></a>  <span class='hs-varid'>toList</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toList</span>
<a name="line-199"></a><span class='hs-cpp'>#endif</span>
<a name="line-200"></a>
<a name="line-201"></a><span class='hs-cpp'>#ifdef MIN_VERSION_deepseq</span>
<a name="line-202"></a><a name="instance%20NFData%20(NonEmpty%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>NFData</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>NFData</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-203"></a>  <span class='hs-varid'>rnf</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rnf</span> <span class='hs-varid'>x</span> <span class='hs-varop'>`seq`</span> <span class='hs-varid'>rnf</span> <span class='hs-varid'>xs</span>
<a name="line-204"></a><span class='hs-cpp'>#endif</span>
<a name="line-205"></a>
<a name="line-206"></a><a name="instance%20MonadFix%20NonEmpty"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>MonadFix</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-keyword'>where</span>
<a name="line-207"></a>  <span class='hs-varid'>mfix</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>fix</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>head</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-208"></a>             <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>mfix</span> <span class='hs-layout'>(</span><span class='hs-varid'>tail</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-209"></a>
<a name="line-210"></a><span class='hs-cpp'>#if MIN_VERSION_base(4,4,0)</span>
<a name="line-211"></a><a name="instance%20MonadZip%20NonEmpty"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>MonadZip</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-keyword'>where</span>
<a name="line-212"></a>  <span class='hs-varid'>mzip</span>     <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zip</span>
<a name="line-213"></a>  <span class='hs-varid'>mzipWith</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zipWith</span>
<a name="line-214"></a>  <span class='hs-varid'>munzip</span>   <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unzip</span>
<a name="line-215"></a><span class='hs-cpp'>#endif</span>
<a name="line-216"></a>
<a name="line-217"></a><a name="length"></a><span class='hs-definition'>length</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Int</span>
<a name="line-218"></a><span class='hs-definition'>length</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span> <span class='hs-varop'>+</span> <span class='hs-conid'>Prelude</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>xs</span>
<a name="line-219"></a><span class='hs-comment'>{-# INLINE length #-}</span>
<a name="line-220"></a>
<a name="line-221"></a><a name="xor"></a><span class='hs-definition'>xor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span>
<a name="line-222"></a><span class='hs-definition'>xor</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>   <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-varid'>xor'</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xs</span>
<a name="line-223"></a>  <span class='hs-keyword'>where</span> <span class='hs-varid'>xor'</span> <span class='hs-conid'>True</span> <span class='hs-varid'>y</span>  <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-varid'>y</span>
<a name="line-224"></a>        <span class='hs-varid'>xor'</span> <span class='hs-conid'>False</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>y</span>
<a name="line-225"></a>
<a name="line-226"></a><a name="unfold"></a><span class='hs-comment'>-- | 'unfold' produces a new stream by repeatedly applying the unfolding</span>
<a name="line-227"></a><span class='hs-comment'>-- function to the seed value to produce an element of type @b@ and a new</span>
<a name="line-228"></a><span class='hs-comment'>-- seed value.  When the unfolding function returns 'Nothing' instead of</span>
<a name="line-229"></a><span class='hs-comment'>-- a new seed value, the stream ends.</span>
<a name="line-230"></a><span class='hs-definition'>unfold</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>b</span>
<a name="line-231"></a><span class='hs-definition'>unfold</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>of</span>
<a name="line-232"></a>  <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span> <span class='hs-conop'>:|</span> <span class='hs-conid'>[]</span>
<a name="line-233"></a>  <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>  <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span> <span class='hs-varop'>&lt;|</span> <span class='hs-varid'>unfold</span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span>
<a name="line-234"></a>
<a name="line-235"></a><a name="nonEmpty"></a><span class='hs-comment'>-- | 'nonEmpty' efficiently turns a normal list into a 'NonEmpty' stream,</span>
<a name="line-236"></a><span class='hs-comment'>-- producing 'Nothing' if the input is empty.</span>
<a name="line-237"></a><span class='hs-definition'>nonEmpty</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-238"></a><span class='hs-definition'>nonEmpty</span> <span class='hs-conid'>[]</span>     <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-239"></a><span class='hs-definition'>nonEmpty</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-240"></a><span class='hs-comment'>{-# INLINE nonEmpty #-}</span>
<a name="line-241"></a>
<a name="line-242"></a><a name="uncons"></a><span class='hs-comment'>-- | 'uncons' produces the first element of the stream, and a stream of the</span>
<a name="line-243"></a><span class='hs-comment'>-- remaining elements, if any.</span>
<a name="line-244"></a><span class='hs-definition'>uncons</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-245"></a><span class='hs-definition'>uncons</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>nonEmpty</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-246"></a><span class='hs-comment'>{-# INLINE uncons #-}</span>
<a name="line-247"></a>
<a name="line-248"></a><a name="unfoldr"></a><span class='hs-definition'>unfoldr</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>b</span>
<a name="line-249"></a><span class='hs-definition'>unfoldr</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>of</span>
<a name="line-250"></a>  <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-varid'>mc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>maybe</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>go</span> <span class='hs-varid'>mc</span>
<a name="line-251"></a> <span class='hs-keyword'>where</span>
<a name="line-252"></a>    <span class='hs-varid'>go</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span> <span class='hs-keyword'>of</span>
<a name="line-253"></a>      <span class='hs-layout'>(</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span> <span class='hs-varid'>me</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>maybe</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>go</span> <span class='hs-varid'>me</span>
<a name="line-254"></a>
<a name="line-255"></a><a name="instance%20Functor%20NonEmpty"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-keyword'>where</span>
<a name="line-256"></a>  <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-keyword'>as</span>
<a name="line-257"></a><span class='hs-cpp'>#if MIN_VERSION_base(4,2,0)</span>
<a name="line-258"></a>  <span class='hs-varid'>b</span> <span class='hs-varop'>&lt;$</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>   <span class='hs-keyglyph'>=</span> <span class='hs-varid'>b</span>   <span class='hs-conop'>:|</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-varop'>&lt;$</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-259"></a><span class='hs-cpp'>#endif</span>
<a name="line-260"></a>
<a name="line-261"></a><a name="instance%20Applicative%20NonEmpty"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Applicative</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-keyword'>where</span>
<a name="line-262"></a>  <span class='hs-varid'>pure</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-conid'>[]</span>
<a name="line-263"></a>  <span class='hs-layout'>(</span><span class='hs-varop'>&lt;*&gt;</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ap</span>
<a name="line-264"></a>
<a name="line-265"></a><a name="instance%20Monad%20NonEmpty"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monad</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-keyword'>where</span>
<a name="line-266"></a>  <span class='hs-varid'>return</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-conid'>[]</span>
<a name="line-267"></a>  <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-varop'>&gt;&gt;=</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>b</span> <span class='hs-conop'>:|</span> <span class='hs-layout'>(</span><span class='hs-varid'>bs</span> <span class='hs-varop'>++</span> <span class='hs-varid'>bs'</span><span class='hs-layout'>)</span>
<a name="line-268"></a>    <span class='hs-keyword'>where</span> <span class='hs-varid'>b</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-269"></a>          <span class='hs-varid'>bs'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>as</span> <span class='hs-varop'>&gt;&gt;=</span> <span class='hs-varid'>toList</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span>
<a name="line-270"></a>
<a name="line-271"></a><a name="instance%20Traversable%20NonEmpty"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Traversable</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-keyword'>where</span>
<a name="line-272"></a>  <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conop'>:|</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-varop'>&lt;*&gt;</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-keyword'>as</span>
<a name="line-273"></a>
<a name="line-274"></a><a name="instance%20Foldable%20NonEmpty"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Foldable</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-keyword'>where</span>
<a name="line-275"></a>  <span class='hs-varid'>foldr</span> <span class='hs-varid'>f</span> <span class='hs-varid'>z</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-varid'>foldr</span> <span class='hs-varid'>f</span> <span class='hs-varid'>z</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-276"></a>  <span class='hs-varid'>foldl</span> <span class='hs-varid'>f</span> <span class='hs-varid'>z</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldl</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>z</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>as</span>
<a name="line-277"></a>  <span class='hs-varid'>foldl1</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldl</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>as</span>
<a name="line-278"></a>  <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-keyword'>as</span>
<a name="line-279"></a>  <span class='hs-varid'>fold</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>m</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>ms</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>fold</span> <span class='hs-varid'>ms</span>
<a name="line-280"></a>
<a name="line-281"></a><a name="head"></a><span class='hs-comment'>-- | Extract the first element of the stream.</span>
<a name="line-282"></a><span class='hs-definition'>head</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span>
<a name="line-283"></a><span class='hs-definition'>head</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-284"></a><span class='hs-comment'>{-# INLINE head #-}</span>
<a name="line-285"></a>
<a name="line-286"></a><a name="tail"></a><span class='hs-comment'>-- | Extract the possibly-empty tail of the stream.</span>
<a name="line-287"></a><span class='hs-definition'>tail</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-288"></a><span class='hs-definition'>tail</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>as</span>
<a name="line-289"></a><span class='hs-comment'>{-# INLINE tail #-}</span>
<a name="line-290"></a>
<a name="line-291"></a><a name="last"></a><span class='hs-comment'>-- | Extract the last element of the stream.</span>
<a name="line-292"></a><span class='hs-definition'>last</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span>
<a name="line-293"></a><span class='hs-definition'>last</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>last</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-294"></a><span class='hs-comment'>{-# INLINE last #-}</span>
<a name="line-295"></a>
<a name="line-296"></a><a name="init"></a><span class='hs-comment'>-- | Extract everything except the last element of the stream.</span>
<a name="line-297"></a><span class='hs-definition'>init</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-298"></a><span class='hs-definition'>init</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>init</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-299"></a><span class='hs-comment'>{-# INLINE init #-}</span>
<a name="line-300"></a>
<a name="line-301"></a><a name="%3c%7c"></a><span class='hs-comment'>-- | Prepend an element to the stream.</span>
<a name="line-302"></a><span class='hs-layout'>(</span><span class='hs-varop'>&lt;|</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-303"></a><a name="a"></a><span class='hs-definition'>a</span> <span class='hs-varop'>&lt;|</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>b</span> <span class='hs-conop'>:</span> <span class='hs-varid'>bs</span>
<a name="line-304"></a><span class='hs-comment'>{-# INLINE (&lt;|) #-}</span>
<a name="line-305"></a>
<a name="line-306"></a><a name="cons"></a><span class='hs-comment'>-- | Synonym for '&lt;|'.</span>
<a name="line-307"></a><span class='hs-definition'>cons</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-308"></a><span class='hs-definition'>cons</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>&lt;|</span><span class='hs-layout'>)</span>
<a name="line-309"></a><span class='hs-comment'>{-# INLINE cons #-}</span>
<a name="line-310"></a>
<a name="line-311"></a><a name="sort"></a><span class='hs-comment'>-- | Sort a stream.</span>
<a name="line-312"></a><span class='hs-definition'>sort</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-313"></a><span class='hs-definition'>sort</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lift</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>sort</span>
<a name="line-314"></a><span class='hs-comment'>{-# INLINE sort #-}</span>
<a name="line-315"></a>
<a name="line-316"></a><a name="fromList"></a><span class='hs-comment'>-- | Converts a normal list to a 'NonEmpty' stream.</span>
<a name="line-317"></a><span class='hs-comment'>--</span>
<a name="line-318"></a><span class='hs-comment'>-- Raises an error if given an empty list.</span>
<a name="line-319"></a><span class='hs-definition'>fromList</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-320"></a><span class='hs-definition'>fromList</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span>
<a name="line-321"></a><span class='hs-definition'>fromList</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"NonEmpty.fromList: empty list"</span>
<a name="line-322"></a><span class='hs-comment'>{-# INLINE fromList #-}</span>
<a name="line-323"></a>
<a name="line-324"></a><a name="toList"></a><span class='hs-comment'>-- | Convert a stream to a normal list efficiently.</span>
<a name="line-325"></a><span class='hs-definition'>toList</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-326"></a><span class='hs-definition'>toList</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:</span> <span class='hs-keyword'>as</span>
<a name="line-327"></a><span class='hs-comment'>{-# INLINE toList #-}</span>
<a name="line-328"></a>
<a name="line-329"></a><a name="lift"></a><span class='hs-comment'>-- | Lift list operations to work on a 'NonEmpty' stream.</span>
<a name="line-330"></a><span class='hs-comment'>--</span>
<a name="line-331"></a><span class='hs-comment'>-- /Beware/: If the provided function returns an empty list,</span>
<a name="line-332"></a><span class='hs-comment'>-- this will raise an error.</span>
<a name="line-333"></a><span class='hs-definition'>lift</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Foldable</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>b</span>
<a name="line-334"></a><span class='hs-definition'>lift</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Foldable</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-335"></a><span class='hs-comment'>{-# INLINE lift #-}</span>
<a name="line-336"></a>
<a name="line-337"></a><a name="map"></a><span class='hs-comment'>-- | Map a function over a 'NonEmpty' stream.</span>
<a name="line-338"></a><span class='hs-definition'>map</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>b</span>
<a name="line-339"></a><span class='hs-definition'>map</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-keyword'>as</span>
<a name="line-340"></a><span class='hs-comment'>{-# INLINE map #-}</span>
<a name="line-341"></a>
<a name="line-342"></a><a name="inits"></a><span class='hs-comment'>-- | The 'inits' function takes a stream @xs@ and returns all the</span>
<a name="line-343"></a><span class='hs-comment'>-- finite prefixes of @xs@.</span>
<a name="line-344"></a><span class='hs-definition'>inits</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Foldable</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-345"></a><span class='hs-definition'>inits</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span> <span class='hs-varop'>.</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>inits</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Foldable</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-346"></a><span class='hs-comment'>{-# INLINE inits #-}</span>
<a name="line-347"></a>
<a name="line-348"></a><a name="tails"></a><span class='hs-comment'>-- | The 'tails' function takes a stream @xs@ and returns all the</span>
<a name="line-349"></a><span class='hs-comment'>-- suffixes of @xs@.</span>
<a name="line-350"></a><span class='hs-definition'>tails</span>   <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Foldable</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-351"></a><span class='hs-definition'>tails</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span> <span class='hs-varop'>.</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>tails</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Foldable</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-352"></a><span class='hs-comment'>{-# INLINE tails #-}</span>
<a name="line-353"></a>
<a name="line-354"></a><a name="insert"></a><span class='hs-comment'>-- | @'insert' x xs@ inserts @x@ into the last position in @xs@ where it</span>
<a name="line-355"></a><span class='hs-comment'>-- is still less than or equal to the next element. In particular, if the</span>
<a name="line-356"></a><span class='hs-comment'>-- list is sorted beforehand, the result will also be sorted.</span>
<a name="line-357"></a><span class='hs-definition'>insert</span>  <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Foldable</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-358"></a><span class='hs-definition'>insert</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span> <span class='hs-varop'>.</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Foldable</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-359"></a><span class='hs-comment'>{-# INLINE insert #-}</span>
<a name="line-360"></a>
<a name="line-361"></a><a name="some1"></a><span class='hs-comment'>-- | @'some1' x@ sequences @x@ one or more times.</span>
<a name="line-362"></a><span class='hs-definition'>some1</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Alternative</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-363"></a><span class='hs-definition'>some1</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conop'>:|</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>x</span> <span class='hs-varop'>&lt;*&gt;</span> <span class='hs-varid'>many</span> <span class='hs-varid'>x</span>
<a name="line-364"></a><span class='hs-comment'>{-# INLINE some1 #-}</span>
<a name="line-365"></a>
<a name="line-366"></a><a name="scanl"></a><span class='hs-comment'>-- | 'scanl' is similar to 'foldl', but returns a stream of successive</span>
<a name="line-367"></a><span class='hs-comment'>-- reduced values from the left:</span>
<a name="line-368"></a><span class='hs-comment'>--</span>
<a name="line-369"></a><span class='hs-comment'>-- &gt; scanl f z [x1, x2, ...] == z :| [z `f` x1, (z `f` x1) `f` x2, ...]</span>
<a name="line-370"></a><span class='hs-comment'>--</span>
<a name="line-371"></a><span class='hs-comment'>-- Note that</span>
<a name="line-372"></a><span class='hs-comment'>--</span>
<a name="line-373"></a><span class='hs-comment'>-- &gt; last (scanl f z xs) == foldl f z xs.</span>
<a name="line-374"></a><span class='hs-definition'>scanl</span>   <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Foldable</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>b</span>
<a name="line-375"></a><span class='hs-definition'>scanl</span> <span class='hs-varid'>f</span> <span class='hs-varid'>z</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span> <span class='hs-varop'>.</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>scanl</span> <span class='hs-varid'>f</span> <span class='hs-varid'>z</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Foldable</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-376"></a><span class='hs-comment'>{-# INLINE scanl #-}</span>
<a name="line-377"></a>
<a name="line-378"></a><a name="scanr"></a><span class='hs-comment'>-- | 'scanr' is the right-to-left dual of 'scanl'.</span>
<a name="line-379"></a><span class='hs-comment'>-- Note that</span>
<a name="line-380"></a><span class='hs-comment'>--</span>
<a name="line-381"></a><span class='hs-comment'>-- &gt; head (scanr f z xs) == foldr f z xs.</span>
<a name="line-382"></a><span class='hs-definition'>scanr</span>   <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Foldable</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>b</span>
<a name="line-383"></a><span class='hs-definition'>scanr</span> <span class='hs-varid'>f</span> <span class='hs-varid'>z</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span> <span class='hs-varop'>.</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>scanr</span> <span class='hs-varid'>f</span> <span class='hs-varid'>z</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Foldable</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-384"></a><span class='hs-comment'>{-# INLINE scanr #-}</span>
<a name="line-385"></a>
<a name="line-386"></a><a name="scanl1"></a><span class='hs-comment'>-- | 'scanl1' is a variant of 'scanl' that has no starting value argument:</span>
<a name="line-387"></a><span class='hs-comment'>--</span>
<a name="line-388"></a><span class='hs-comment'>-- &gt; scanl1 f [x1, x2, ...] == x1 :| [x1 `f` x2, x1 `f` (x2 `f` x3), ...]</span>
<a name="line-389"></a><span class='hs-definition'>scanl1</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-390"></a><span class='hs-definition'>scanl1</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span> <span class='hs-layout'>(</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>scanl</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-391"></a><span class='hs-comment'>{-# INLINE scanl1 #-}</span>
<a name="line-392"></a>
<a name="line-393"></a><a name="scanr1"></a><span class='hs-comment'>-- | 'scanr1' is a variant of 'scanr' that has no starting value argument.</span>
<a name="line-394"></a><span class='hs-definition'>scanr1</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-395"></a><span class='hs-definition'>scanr1</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span> <span class='hs-layout'>(</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>scanr1</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-396"></a><span class='hs-comment'>{-# INLINE scanr1 #-}</span>
<a name="line-397"></a>
<a name="line-398"></a><a name="intersperse"></a><span class='hs-comment'>-- | 'intersperse x xs' alternates elements of the list with copies of @x@.</span>
<a name="line-399"></a><span class='hs-comment'>--</span>
<a name="line-400"></a><span class='hs-comment'>-- &gt; intersperse 0 (1 :| [2,3]) == 1 :| [0,2,0,3]</span>
<a name="line-401"></a><span class='hs-definition'>intersperse</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-402"></a><span class='hs-definition'>intersperse</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>b</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>bs</span> <span class='hs-keyword'>of</span>
<a name="line-403"></a>    <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>[]</span>
<a name="line-404"></a>    <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>intersperse</span> <span class='hs-varid'>a</span> <span class='hs-varid'>bs</span>
<a name="line-405"></a><span class='hs-comment'>{-# INLINE intersperse #-}</span>
<a name="line-406"></a>
<a name="line-407"></a><a name="iterate"></a><span class='hs-comment'>-- | @'iterate' f x@ produces the infinite sequence</span>
<a name="line-408"></a><span class='hs-comment'>-- of repeated applications of @f@ to @x@.</span>
<a name="line-409"></a><span class='hs-comment'>--</span>
<a name="line-410"></a><span class='hs-comment'>-- &gt; iterate f x = x :| [f x, f (f x), ..]</span>
<a name="line-411"></a><span class='hs-definition'>iterate</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-412"></a><span class='hs-definition'>iterate</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>iterate</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-413"></a><span class='hs-comment'>{-# INLINE iterate #-}</span>
<a name="line-414"></a>
<a name="line-415"></a><a name="cycle"></a><span class='hs-comment'>-- | @'cycle' xs@ returns the infinite repetition of @xs@:</span>
<a name="line-416"></a><span class='hs-comment'>--</span>
<a name="line-417"></a><span class='hs-comment'>-- &gt; cycle [1,2,3] = 1 :| [2,3,1,2,3,...]</span>
<a name="line-418"></a><span class='hs-definition'>cycle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-419"></a><span class='hs-definition'>cycle</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromList</span> <span class='hs-varop'>.</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>cycle</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span>
<a name="line-420"></a><span class='hs-comment'>{-# INLINE cycle #-}</span>
<a name="line-421"></a>
<a name="line-422"></a><a name="reverse"></a><span class='hs-comment'>-- | 'reverse' a finite NonEmpty stream.</span>
<a name="line-423"></a><span class='hs-definition'>reverse</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-424"></a><span class='hs-definition'>reverse</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lift</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-425"></a><span class='hs-comment'>{-# INLINE reverse #-}</span>
<a name="line-426"></a>
<a name="line-427"></a><a name="repeat"></a><span class='hs-comment'>-- | @'repeat' x@ returns a constant stream, where all elements are</span>
<a name="line-428"></a><span class='hs-comment'>-- equal to @x@.</span>
<a name="line-429"></a><span class='hs-definition'>repeat</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-430"></a><span class='hs-definition'>repeat</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>repeat</span> <span class='hs-varid'>a</span>
<a name="line-431"></a><span class='hs-comment'>{-# INLINE repeat #-}</span>
<a name="line-432"></a>
<a name="line-433"></a><a name="take"></a><span class='hs-comment'>-- | @'take' n xs@ returns the first @n@ elements of @xs@.</span>
<a name="line-434"></a><span class='hs-definition'>take</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-435"></a><span class='hs-definition'>take</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-varid'>n</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span>
<a name="line-436"></a><span class='hs-comment'>{-# INLINE take #-}</span>
<a name="line-437"></a>
<a name="line-438"></a><a name="drop"></a><span class='hs-comment'>-- | @'drop' n xs@ drops the first @n@ elements off the front of</span>
<a name="line-439"></a><span class='hs-comment'>-- the sequence @xs@.</span>
<a name="line-440"></a><span class='hs-definition'>drop</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-441"></a><span class='hs-definition'>drop</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>drop</span> <span class='hs-varid'>n</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span>
<a name="line-442"></a><span class='hs-comment'>{-# INLINE drop #-}</span>
<a name="line-443"></a>
<a name="line-444"></a><a name="splitAt"></a><span class='hs-comment'>-- | @'splitAt' n xs@ returns a pair consisting of the prefix of @xs@</span>
<a name="line-445"></a><span class='hs-comment'>-- of length @n@ and the remaining stream immediately following this prefix.</span>
<a name="line-446"></a><span class='hs-comment'>--</span>
<a name="line-447"></a><span class='hs-comment'>-- &gt; 'splitAt' n xs == ('take' n xs, 'drop' n xs)</span>
<a name="line-448"></a><span class='hs-comment'>-- &gt; xs == ys ++ zs where (ys, zs) = 'splitAt' n xs</span>
<a name="line-449"></a><span class='hs-definition'>splitAt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-450"></a><span class='hs-definition'>splitAt</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>splitAt</span> <span class='hs-varid'>n</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span>
<a name="line-451"></a><span class='hs-comment'>{-# INLINE splitAt #-}</span>
<a name="line-452"></a>
<a name="line-453"></a><a name="takeWhile"></a><span class='hs-comment'>-- | @'takeWhile' p xs@ returns the longest prefix of the stream</span>
<a name="line-454"></a><span class='hs-comment'>-- @xs@ for which the predicate @p@ holds.</span>
<a name="line-455"></a><span class='hs-definition'>takeWhile</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-456"></a><span class='hs-definition'>takeWhile</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>takeWhile</span> <span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span>
<a name="line-457"></a><span class='hs-comment'>{-# INLINE takeWhile #-}</span>
<a name="line-458"></a>
<a name="line-459"></a><a name="dropWhile"></a><span class='hs-comment'>-- | @'dropWhile' p xs@ returns the suffix remaining after</span>
<a name="line-460"></a><span class='hs-comment'>-- @'takeWhile' p xs@.</span>
<a name="line-461"></a><span class='hs-definition'>dropWhile</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-462"></a><span class='hs-definition'>dropWhile</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>dropWhile</span> <span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span>
<a name="line-463"></a><span class='hs-comment'>{-# INLINE dropWhile #-}</span>
<a name="line-464"></a>
<a name="line-465"></a><a name="span"></a><span class='hs-comment'>-- | @'span' p xs@ returns the longest prefix of @xs@ that satisfies</span>
<a name="line-466"></a><span class='hs-comment'>-- @p@, together with the remainder of the stream.</span>
<a name="line-467"></a><span class='hs-comment'>--</span>
<a name="line-468"></a><span class='hs-comment'>-- &gt; 'span' p xs == ('takeWhile' p xs, 'dropWhile' p xs)</span>
<a name="line-469"></a><span class='hs-comment'>-- &gt; xs == ys ++ zs where (ys, zs) = 'span' p xs</span>
<a name="line-470"></a><span class='hs-definition'>span</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-471"></a><span class='hs-definition'>span</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>span</span> <span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span>
<a name="line-472"></a><span class='hs-comment'>{-# INLINE span #-}</span>
<a name="line-473"></a>
<a name="line-474"></a><a name="break"></a><span class='hs-comment'>-- | The @'break' p@ function is equivalent to @'span' (not . p)@.</span>
<a name="line-475"></a><span class='hs-definition'>break</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-476"></a><span class='hs-definition'>break</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>span</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-477"></a><span class='hs-comment'>{-# INLINE break #-}</span>
<a name="line-478"></a>
<a name="line-479"></a><a name="filter"></a><span class='hs-comment'>-- | @'filter' p xs@ removes any elements from @xs@ that do not satisfy @p@.</span>
<a name="line-480"></a><span class='hs-definition'>filter</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-481"></a><span class='hs-definition'>filter</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>filter</span> <span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span>
<a name="line-482"></a><span class='hs-comment'>{-# INLINE filter #-}</span>
<a name="line-483"></a>
<a name="line-484"></a><a name="partition"></a><span class='hs-comment'>-- | The 'partition' function takes a predicate @p@ and a stream</span>
<a name="line-485"></a><span class='hs-comment'>-- @xs@, and returns a pair of lists. The first list corresponds to the</span>
<a name="line-486"></a><span class='hs-comment'>-- elements of @xs@ for which @p@ holds; the second corresponds to the</span>
<a name="line-487"></a><span class='hs-comment'>-- elements of @xs@ for which @p@ does not hold.</span>
<a name="line-488"></a><span class='hs-comment'>--</span>
<a name="line-489"></a><span class='hs-comment'>-- &gt; 'partition' p xs = ('filter' p xs, 'filter' (not . p) xs)</span>
<a name="line-490"></a><span class='hs-definition'>partition</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-491"></a><span class='hs-definition'>partition</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>partition</span> <span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span>
<a name="line-492"></a><span class='hs-comment'>{-# INLINE partition #-}</span>
<a name="line-493"></a>
<a name="line-494"></a><a name="group"></a><span class='hs-comment'>-- | The 'group' function takes a stream and returns a list of</span>
<a name="line-495"></a><span class='hs-comment'>-- streams such that flattening the resulting list is equal to the</span>
<a name="line-496"></a><span class='hs-comment'>-- argument.  Moreover, each stream in the resulting list</span>
<a name="line-497"></a><span class='hs-comment'>-- contains only equal elements.  For example, in list notation:</span>
<a name="line-498"></a><span class='hs-comment'>--</span>
<a name="line-499"></a><span class='hs-comment'>-- &gt; 'group' $ 'cycle' "Mississippi" = "M" : "i" : "ss" : "i" : "ss" : "i" : "pp" : "i" : "M" : "i" : ...</span>
<a name="line-500"></a><span class='hs-definition'>group</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Foldable</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-501"></a><span class='hs-definition'>group</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>groupBy</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-502"></a><span class='hs-comment'>{-# INLINE group #-}</span>
<a name="line-503"></a>
<a name="line-504"></a><a name="groupBy"></a><span class='hs-comment'>-- | 'groupBy' operates like 'group', but uses the provided equality</span>
<a name="line-505"></a><span class='hs-comment'>-- predicate instead of `==`.</span>
<a name="line-506"></a><span class='hs-definition'>groupBy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Foldable</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-507"></a><span class='hs-definition'>groupBy</span> <span class='hs-varid'>eq0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span> <span class='hs-varid'>eq0</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Foldable</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-508"></a>  <span class='hs-keyword'>where</span>
<a name="line-509"></a>    <span class='hs-varid'>go</span> <span class='hs-keyword'>_</span>  <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-510"></a>    <span class='hs-varid'>go</span> <span class='hs-varid'>eq</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>groupBy</span> <span class='hs-varid'>eq</span> <span class='hs-varid'>zs</span>
<a name="line-511"></a>      <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>ys</span><span class='hs-layout'>,</span> <span class='hs-varid'>zs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>span</span> <span class='hs-layout'>(</span><span class='hs-varid'>eq</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-512"></a>
<a name="line-513"></a><a name="groupWith"></a><span class='hs-comment'>-- | 'groupWith' operates like 'group', but uses the provided projection when</span>
<a name="line-514"></a><span class='hs-comment'>-- comparing for equality</span>
<a name="line-515"></a><span class='hs-definition'>groupWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Foldable</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-516"></a><span class='hs-definition'>groupWith</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>groupBy</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>`on`</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-517"></a><span class='hs-comment'>{-# INLINE groupWith #-}</span>
<a name="line-518"></a>
<a name="line-519"></a><a name="groupAllWith"></a><span class='hs-comment'>-- | 'groupAllWith' operates like 'groupWith', but sorts the list first so that each</span>
<a name="line-520"></a><span class='hs-comment'>-- equivalence class has, at most, one list in the output</span>
<a name="line-521"></a><span class='hs-definition'>groupAllWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ord</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-522"></a><span class='hs-definition'>groupAllWith</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>groupWith</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>sortBy</span> <span class='hs-layout'>(</span><span class='hs-varid'>compare</span> <span class='hs-varop'>`on`</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-523"></a><span class='hs-comment'>{-# INLINE groupAllWith #-}</span>
<a name="line-524"></a>
<a name="line-525"></a><a name="group1"></a><span class='hs-comment'>-- | 'group1' operates like 'group', but uses the knowledge that its</span>
<a name="line-526"></a><span class='hs-comment'>-- input is non-empty to produce guaranteed non-empty output.</span>
<a name="line-527"></a><span class='hs-definition'>group1</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-528"></a><span class='hs-definition'>group1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>groupBy1</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-529"></a><span class='hs-comment'>{-# INLINE group1 #-}</span>
<a name="line-530"></a>
<a name="line-531"></a><a name="groupBy1"></a><span class='hs-comment'>-- | 'groupBy1' is to 'group1' as 'groupBy' is to 'group'.</span>
<a name="line-532"></a><span class='hs-definition'>groupBy1</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-533"></a><span class='hs-definition'>groupBy1</span> <span class='hs-varid'>eq</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>groupBy</span> <span class='hs-varid'>eq</span> <span class='hs-varid'>zs</span>
<a name="line-534"></a>  <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>ys</span><span class='hs-layout'>,</span> <span class='hs-varid'>zs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>span</span> <span class='hs-layout'>(</span><span class='hs-varid'>eq</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-535"></a><span class='hs-comment'>{-# INLINE groupBy1 #-}</span>
<a name="line-536"></a>
<a name="line-537"></a><a name="groupWith1"></a><span class='hs-comment'>-- | 'groupWith1' is to 'group1' as 'groupWith' is to 'group'</span>
<a name="line-538"></a><span class='hs-definition'>groupWith1</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-539"></a><span class='hs-definition'>groupWith1</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>groupBy1</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>`on`</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-540"></a><span class='hs-comment'>{-# INLINE groupWith1 #-}</span>
<a name="line-541"></a>
<a name="line-542"></a><a name="groupAllWith1"></a><span class='hs-comment'>-- | 'groupAllWith1' is to 'groupWith1' as 'groupAllWith' is to 'groupWith'</span>
<a name="line-543"></a><span class='hs-definition'>groupAllWith1</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ord</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-544"></a><span class='hs-definition'>groupAllWith1</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>groupWith1</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>sortWith</span> <span class='hs-varid'>f</span>
<a name="line-545"></a><span class='hs-comment'>{-# INLINE groupAllWith1 #-}</span>
<a name="line-546"></a>
<a name="line-547"></a><a name="isPrefixOf"></a><span class='hs-comment'>-- | The 'isPrefix' function returns @True@ if the first argument is</span>
<a name="line-548"></a><span class='hs-comment'>-- a prefix of the second.</span>
<a name="line-549"></a><span class='hs-definition'>isPrefixOf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span>
<a name="line-550"></a><span class='hs-definition'>isPrefixOf</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-551"></a><span class='hs-definition'>isPrefixOf</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varop'>==</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>isPrefixOf</span> <span class='hs-varid'>ys</span> <span class='hs-varid'>xs</span>
<a name="line-552"></a><span class='hs-comment'>{-# INLINE isPrefixOf #-}</span>
<a name="line-553"></a>
<a name="line-554"></a><a name="!!"></a><span class='hs-comment'>-- | @xs !! n@ returns the element of the stream @xs@ at index</span>
<a name="line-555"></a><span class='hs-comment'>-- @n@. Note that the head of the stream has index 0.</span>
<a name="line-556"></a><span class='hs-comment'>--</span>
<a name="line-557"></a><span class='hs-comment'>-- /Beware/: a negative or out-of-bounds index will cause an error.</span>
<a name="line-558"></a><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span>
<a name="line-559"></a><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>n</span>
<a name="line-560"></a>  <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-561"></a>  <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>&gt;</span> <span class='hs-num'>0</span>  <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xs</span> <span class='hs-conid'>List</span><span class='hs-varop'>.!!</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-562"></a>  <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"NonEmpty.!! negative argument"</span>
<a name="line-563"></a><span class='hs-comment'>{-# INLINE (!!) #-}</span>
<a name="line-564"></a>
<a name="line-565"></a><a name="zip"></a><span class='hs-comment'>-- | The 'zip' function takes two streams and returns a stream of</span>
<a name="line-566"></a><span class='hs-comment'>-- corresponding pairs.</span>
<a name="line-567"></a><span class='hs-definition'>zip</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-568"></a><span class='hs-definition'>zip</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-conop'>:|</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>zip</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys</span>
<a name="line-569"></a><span class='hs-comment'>{-# INLINE zip #-}</span>
<a name="line-570"></a>
<a name="line-571"></a><a name="zipWith"></a><span class='hs-comment'>-- | The 'zipWith' function generalizes 'zip'. Rather than tupling</span>
<a name="line-572"></a><span class='hs-comment'>-- the elements, the elements are combined using the function</span>
<a name="line-573"></a><span class='hs-comment'>-- passed as the first argument.</span>
<a name="line-574"></a><span class='hs-definition'>zipWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>c</span>
<a name="line-575"></a><span class='hs-definition'>zipWith</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:|</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-conop'>:|</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>zipWith</span> <span class='hs-varid'>f</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys</span>
<a name="line-576"></a><span class='hs-comment'>{-# INLINE zipWith #-}</span>
<a name="line-577"></a>
<a name="line-578"></a><a name="unzip"></a><span class='hs-comment'>-- | The 'unzip' function is the inverse of the 'zip' function.</span>
<a name="line-579"></a><span class='hs-definition'>unzip</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Functor</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-580"></a><span class='hs-definition'>unzip</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>fst</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>xs</span><span class='hs-layout'>,</span> <span class='hs-varid'>snd</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-581"></a><span class='hs-comment'>{-# INLINE unzip #-}</span>
<a name="line-582"></a>
<a name="line-583"></a><a name="nub"></a><span class='hs-comment'>-- | The 'nub' function removes duplicate elements from a list. In</span>
<a name="line-584"></a><span class='hs-comment'>-- particular, it keeps only the first occurence of each element.</span>
<a name="line-585"></a><span class='hs-comment'>-- (The name 'nub' means \'essence\'.)</span>
<a name="line-586"></a><span class='hs-comment'>-- It is a special case of 'nubBy', which allows the programmer to</span>
<a name="line-587"></a><span class='hs-comment'>-- supply their own inequality test.</span>
<a name="line-588"></a><span class='hs-definition'>nub</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-589"></a><span class='hs-definition'>nub</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nubBy</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-590"></a>
<a name="line-591"></a><a name="nubBy"></a><span class='hs-comment'>-- | The 'nubBy' function behaves just like 'nub', except it uses a</span>
<a name="line-592"></a><span class='hs-comment'>-- user-supplied equality predicate instead of the overloaded '=='</span>
<a name="line-593"></a><span class='hs-comment'>-- function.</span>
<a name="line-594"></a><span class='hs-definition'>nubBy</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-595"></a><span class='hs-definition'>nubBy</span> <span class='hs-varid'>eq</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:|</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>nubBy</span> <span class='hs-varid'>eq</span> <span class='hs-layout'>(</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>eq</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-596"></a>
<a name="line-597"></a><a name="transpose"></a><span class='hs-comment'>-- | 'transpose' for 'NonEmpty', behaves the same as 'Data.List.transpose'</span>
<a name="line-598"></a><span class='hs-comment'>-- The rows/columns need not be the same length, in which case</span>
<a name="line-599"></a><span class='hs-comment'>-- &gt; transpose . transpose /= id</span>
<a name="line-600"></a><span class='hs-definition'>transpose</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-601"></a><span class='hs-definition'>transpose</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>fromList</span>
<a name="line-602"></a>          <span class='hs-varop'>.</span> <span class='hs-varid'>fromList</span> <span class='hs-varop'>.</span> <span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>transpose</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Foldable</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-603"></a>          <span class='hs-varop'>.</span> <span class='hs-varid'>fmap</span> <span class='hs-conid'>Foldable</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-604"></a>
<a name="line-605"></a><a name="sortBy"></a><span class='hs-comment'>-- | 'sortBy' for 'NonEmpty', behaves the same as 'Data.List.sortBy'</span>
<a name="line-606"></a><span class='hs-definition'>sortBy</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Ordering</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-607"></a><span class='hs-definition'>sortBy</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lift</span> <span class='hs-layout'>(</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-varid'>sortBy</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-608"></a>
<a name="line-609"></a><a name="sortWith"></a><span class='hs-comment'>-- | 'sortWith' for 'NonEmpty', behaves the same as:</span>
<a name="line-610"></a><span class='hs-comment'>--</span>
<a name="line-611"></a><span class='hs-comment'>-- &gt; sortBy . comparing</span>
<a name="line-612"></a><span class='hs-definition'>sortWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>o</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span>
<a name="line-613"></a><span class='hs-definition'>sortWith</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sortBy</span> <span class='hs-varop'>.</span> <span class='hs-varid'>comparing</span>
</pre></body>
</html>

APT Browse - Built by Thomas Orozco.