You already have the solution, you just need to save the diff to a variable instead of converting it immediately to an array.

use PDL;
use PDL::Char;
$PDL::SHARE = $PDL::SHARE; # keep stray warning quiet

use strict;
use warnings;

my $source = PDL::Char->new('ATTCCGGG');
for my $str (qw(ATTGCGGG ATACCGGC)) {
    my $match = PDL::Char->new($str);

    # Is a PDL::Char
    my $diff = $match != $source;
    
    # Show diff
    print join(' ', $diff->list), "\n";
}

[download]

Also, what warnings is the following code supposed to keep quiet? It changes nothing on my system.

$PDL::SHARE = $PDL::SHARE; # keep stray warning quiet

[download]

In reply to Re: PDL: string comparison to binary piddle by wind
in thread PDL: string comparison to binary piddle by umeboshi

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