Hey Monks I never realized perl behaves like this. There is a difference between (! 'a' eq 'b') and ('a' ne 'b'). 
#!perl
use strict;
use warnings;
use Data::Dumper;

my $s1 = 'bla';
my $s2 = 'blu';

my $r = $s1 eq $s2;
print Dumper $r;

if (! $s1 eq $s2) {
    print "$s1 and $s2 are not the same\n";
}
else {
    print "$s1 and $s2 are the same\n";
}

exit 0;

[download]
prints: 
$VAR1 = '';
bla and blu are the same

[download]

The "correct" ($s1 ne $s2) works as expected. But why does (! $s1 eq $s2) not work?

Probably there is a simple explanation but I don't know it... Maybe one of you Monks can explain this.

Thank you

In reply to ne vs. ! eq by boerni

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