#!/usr/bin/perl

# http://perlmonks.org/?node_id=1203332

use strict;
use warnings;

my @test = ("ananas", "de:mindset:rule1", "en:mindset:rule1", "wiki:we
+lcome", "
de:sidebar", "sidebar", "en:sidebar", "start", "de:start", "en:start")
+;
my ($cnt, $result);

print "start first loop <var !=> \n";
$cnt=0;
foreach (@test) {
    if ($_ !~ /(start|sidebar)/) {
        print "   >$_<\n";
        $cnt++;
    }
}
$result = ($cnt eq 4? ">> correct result" : ">> wrong result");
print "end first loop <$cnt> is $result\n\nstart second loop <negative
+ lookahea
d>\n";
$cnt=0;
foreach (@test) {
    if ($_ =~ /^(?!.*start|.*sidebar)/s) {
        print "   >$_<\n";
        $cnt++;
    }
}
$result = ($cnt eq 4? ">> correct result" : ">> wrong result");
print "end second loop <$cnt> is $result\n";
print ">>pgm ended\n";

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In reply to Re: regex negativ lookahead by tybalt89
in thread regex negativ lookahead by SwissGeorge

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