1Debug::ShowStuff::ShowVUasre(r3)Contributed Perl DocumenDteabtuigo:n:ShowStuff::ShowVar(3)
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NAME

6       Debug::ShowStuff::ShowVar - shortcuts for Debug::ShowStuff
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SYNOPSIS

9        use Debug::ShowStuff ':all';
10        use Debug::ShowStuff::ShowVar;
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12        # output the name of the variable followed by the value of the variable
13        showvar $myvar;
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15        ## outputs this line with println
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17        ##- outputs this line with prinhr
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19        ##i indents using indent
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DESCRIPTION

22       Debug::ShowStuff::ShowVar is a preprocessor that provides shortcuts for
23       a few Debug::ShowStuff commands.  This module modifies your code so
24       that some simple commands are translated into longer Debug::ShowStuff
25       commands.
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27       Debug::ShowStuff::ShowVar is a filter, so it requires very simple
28       syntax for it to understand your code.  Don't get fancy, this module
29       won't understand it.
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Commands

32   showvar
33       showvar translates a line into a println that shows the name of a
34       variable and its value.  So, for example, this line:
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36        showvar $myvar;
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38       translates into this line
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40        println '$myvar: ', $myvar;
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42   ##
43       A double hash followed by text gets translated into a println statement
44       of that text.  So, for example, this code:
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46        ## my text
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48       is translated into
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50        println 'my text';
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52       Note that there must be exactly two hash marks.  Three or more will not
53       be translated.
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55       ## is handy for when you don't want to repeat yourself documenting
56       code.  For examle, this redundant code:
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58        # open a file
59        println 'open a file';
60        open_file();
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62       can be written more concisely as
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64        ## open a file
65        open_file();
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67   ##- and ##=
68       ##- and ##= work like ##, except that a printhr statement is created
69       instead of println.  ##- creates a horizontal rule using dashes (-).
70       ##= creates a horizontal rule using equals (=).
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72   ##i
73       ##i translates into an indent command, including a variable to hold the
74       lexical indent variable.  For example, suppose you want to output a
75       value with println, then indent the rest of the scope.  With just
76       Debug::ShowStuff commands you would do this:
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78        println 'begin';
79        my $indent = indent();
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81       Instead, you can put ##i at the beginning of the first line and get the
82       indent.  So the following line accomplishes the same thing as above:
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84        println 'begin'; ##i
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TERMS AND CONDITIONS

87       Copyright (c) 2013 by Miko O'Sullivan.  All rights reserved.  This
88       program is free software; you can redistribute it and/or modify it
89       under the same terms as Perl itself. This software comes with NO
90       WARRANTY of any kind.
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AUTHORS

93       Miko O'Sullivan miko@idocs.com
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VERSION

96       Version 0.10    March 17, 2013
97           Initial public release.
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99       Version 0.11    March 19, 2013
100           Small but important fix to documentation.
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104perl v5.30.1                      2020-01-29      Debug::ShowStuff::ShowVar(3)