Yes, there is "0 but true" and that is very, very seldom known thing. You are correct about that extra detail that I'd forgotten, but I have seen it before.

Thanks for adding that point!

My main point got lost in that there is such a thing as "True but Zero value". I just blew it in my post. With my current small screen, number "0" and letter "O" look almost the same. I blew it. I admit it. Let's move on.

Update: Here is some code that proves your comment: 

#!/usr/bin/perl
use warnings;
use strict;

my $x = "0 but true";
my $y = "0 but whatever";

$x += 0;
$y += 0;
__END__

Prints:
Argument "0 but whatever" isn't numeric in 
addition (+) at C:\Projects_Perl\0buttrue.pl line 9.

Process completed successfully

[download]
You are correct, my $x = "0 but true"; is "special". 0E0 is more often seen, but this works the same way.

In reply to Re^2: The True but Zero value? by Marshall
in thread The True but Zero value? by Marshall

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