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<title>Graphics/Rendering/Chart/Utils.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- | Non chart specific utility functions.</span>
<a name="line-2"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-layout'>(</span>
<a name="line-3"></a> <span class='hs-varid'>isValidNumber</span><span class='hs-layout'>,</span>
<a name="line-4"></a> <span class='hs-varid'>maybeM</span><span class='hs-layout'>,</span>
<a name="line-5"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-6"></a>
<a name="line-7"></a><a name="isValidNumber"></a><span class='hs-comment'>-- | Checks if the given value is and actual numeric value and not </span>
<a name="line-8"></a><span class='hs-comment'>-- a concept like NaN or infinity.</span>
<a name="line-9"></a><span class='hs-definition'>isValidNumber</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealFloat</span> <span class='hs-varid'>a</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-conid'>Bool</span>
<a name="line-10"></a><span class='hs-definition'>isValidNumber</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>isNaN</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>isInfinite</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span>
<a name="line-11"></a>
<a name="line-12"></a><a name="maybeM"></a><span class='hs-comment'>-- | Version of 'Prelude.maybe' that returns a monadic value.</span>
<a name="line-13"></a><span class='hs-definition'>maybeM</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</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-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>b</span>
<a name="line-14"></a><span class='hs-definition'>maybeM</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span>
<a name="line-15"></a>
<a name="line-16"></a>
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