/usr/share/plplot_octave/struct_contains.m is in octave-plplot 5.10.0+dfsg-1.
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 | ## Copyright (C) 2003 John W. Eaton
##
## This file is part of Octave.
##
## Octave is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2, or (at your option)
## any later version.
##
## Octave is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING. If not, write to the Free
## Software Foundation, 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
## -*- texinfo -*-
## @deftypefn {Function File} {} struct_contains (@var{expr}, @var{name})
## This function has been deprecated. Use isfield instead.
## @end deftypefn
## Author: jwe
## Changed by Rafael Laboissiere for use with the octave-plplot package
## on Sat May 8 16:42:53 UTC 2004
function retval = struct_contains (varargin)
retval = isstruct (varargin{1}) && isfield (varargin{:});
endfunction
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