> > ... For instance this way, one could try to patch booleans in a way that they stringify to "false" and "true" like in JS. ...

> This is what boolean does.

well, not yet:

JS-Console 

>>> true
 
true
 
>>> "stringification: " + (1==1)
 
"stringification: true"

[download]

use v5.10.0;
use boolean;
 
say true;
say "stringification:" . (1==1);

[download]

output: 

/usr/bin/perl -w /tmp/boolean.pl 
1
stringification:1

[download]

but using dualvars could help.

UPDATE:

kind of 

use Scalar::Util qw/dualvar/;
 
my $false = dualvar 0, "false";
my $true = dualvar 1, "true";
 
say $true;
say "stringification:" . $true;
say "numification: " . (0+$true);
 
say $false;
say "stringification: " . $false;
say "numification: " . (0+$false);

[download]

Cheers Rolf

In reply to Re^3: Perl allows you to change the definition of false to make it true. (And vice versa.) by LanX
in thread Perl allows you to change the definition of false to make it true. (And vice versa.) by tobyink

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.