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  1. or download this
    >>> true
 
...
>>> "stringification: " + (1==1)
 
"stringification: true"
  2. or download this
    use v5.10.0;
use boolean;
 
say true;
say "stringification:" . (1==1);
  3. or download this
    /usr/bin/perl -w /tmp/boolean.pl 
1
stringification:1
  4. or download this
    use Scalar::Util qw/dualvar/;
 
...
say $false;
say "stringification: " . $false;
say "numification: " . (0+$false);