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annotate scripts/strings/isletter.m @ 20720:315b7d51d6c8

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randi.m: Display warnings in case of range exceedings.
author Kai T. Ohlhus <k.ohlhus@gmail.com>
date Wed, 23 Sep 2015 15:31:34 +0200
parents df437a52bcaf
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
19898
4197fc428c7d maint: Update copyright notices for 2015.
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1 ## Copyright (C) 1998-2015 John W. Eaton
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} isletter (@var{s})
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21 ## Return a logical array which is true where the elements of @var{s}
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22 ## are letters and false where they are not.
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23 ##
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24 ## This is an alias for the @code{isalpha} function.
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25 ## @seealso{isalpha, isdigit, ispunct, isspace, iscntrl, isalnum}
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26 ## @end deftypefn
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28 ## Author: jwe
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29
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30 function retval = isletter (s)
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31
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32 if (nargin != 1)
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33 print_usage ();
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34 endif
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35
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36 retval = isalpha (s);
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37
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38 endfunction
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41 %!error isletter ()
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42 %!error isletter ("a", "b")
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