The problem is that value can be a few thousands of chars, so I wasn't sure if it's ok to put it into a hash-key.
I used this approach :
use Digest::MD5 qw(md5 md5_hex md5_base64);
# do unique value
my %write_short;
for my $index(keys %write){
    #print "index $index\n";
    my %trg = %{$write{"$index"}};
    my %md5_line;
    my %md5_tg;
    for my $target( keys %trg ){
        my $digest = md5_base64($trg{"$target"});
        
        $md5_line{"$digest"}=$trg{"$target"};
        push @{$md5_tg{"$digest"}},$target;
    }
    
    for my $digest(keys %md5_tg){
        my $tg_line=join ',', @{$md5_tg{"$digest"}};
        $write_short{"$index"}{"$tg_line"}=$md5_line{$digest};
    }
}

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In reply to Re: Maximum length of hash key ? by AlfaProject
in thread Maximum length of hash key ? by AlfaProject

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