You can print unique values in array order using a variation on the standard hash trick: 

my %unique;
@unique{@values} = ();

for (@values) {
    next unless exists $unique{$_};
    print $_, $/;
    delete $unique{$_};
}

[download]

Update: A simpler way that leaves you with the %unique hash populated: 

my %unique;
for (@values) {
    next if exists $unique{$_};
    print $_, $/;
    $unique{$_}++;
}

[download]

After Compline,
Zaxo

In reply to Re: Unique values in array by Zaxo
in thread Unique values in array by Anonymous Monk

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