WTF!? 
#!/usr/bin/perl
use strict;
use warnings;
my %hash=(1=>10,2=>20,3=>30,4=>40,5=>50);


my $max=0;
my @out=map{
    $_=$hash{$_};
    if($_>$max){$max=$_}
#    $_;
}keys %hash;

print "Max value was $max\n";
use Data::Dumper; print Dumper \@out;

[download]

UPDATED FOR CLARIFICATION: Run that, you will get this: Max value was 50 $VAR1 = 40, '', '', '', 50 ;

Now un-comment the commented line and run it again. You will get this: Max value was 50 $VAR1 = 40, 10, 30, 20, 50 ;

Please do not post comments of "Read the Manual". Not only is that comment insulting, but it is not covered in the manual.

In reply to Map Function Weirdness by rthawkcom

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