Boolean support for Perl
http://search.cpan.org/dist/boolean/
Most programming languages have a native 'Boolean' data type. Perl does
not.
Perl has a simple and well known Truth System. The following scalar values
are false:
$false1 = undef;
$false2 = 0;
$false3 = 0.0;
$false4 = '';
$false5 = '0';
Every other scalar value is true.
This module provides basic Boolean support, by defining two special
objects: 'true' and 'false'.
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Dirk Mueller (dirkmueller)
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