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I'm not 100% sure what you want to do here Jeri. The sample below assumes you have a single string composed of 9 character sequences. When the 'for' has run the keys of %uniq will be the unique 9 character sequences.

It would take a while and a lot of memory over 5 mill x 9 char sequences!

my $str = join '',(648040620,637132715,649986572,648040620 ); my $proteins_count = length ($str)/9; my %uniq; do { $uniq{$_}++ unless $uniq{$_} } for unpack "(A9)$proteins_count" , $str; print "@{[keys %uniq]}\n";
Prints ..
637132715 648040620 649986572

In reply to Re^4: Is there a way to compare strings without using an array? by mrstlee
in thread Is there a way to compare strings without using an array? by Jeri

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    [Discipulus]: how I can tell in which perl version was included List::Util 1.29 ?
    [Discipulus]: to specify use 5.0.x to be sure to have pairmap from the module..
    [Corion]: Discipulus: I think Module::Corelist ( or corelist ) can tell you that
    [Corion]: Meh - Module::CoreList
    [choroba]: Just use List::Util 1.29
    [choroba]: Be kind to people using old Perl with newer version of the module
    [Corion]: But why not simply specify 'List::Util' => 1.29 in your prerequisites? People might install a more recent version of the module into their Perl
    [Corion]: (what choroba said)

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