One simple way is to use each filename as the key in a hash. 

my @images;                       # array of filenames
my %img;                          # hash used temporarily
$img{$_} = 1 foreach @images;     # stick them in a hash
@images = keys %img;              # now only unique filenames

[download]

A slightly fancier way using grep that preserves the original order: 

@images = grep { ! $img{$_}++ } @images;

[download]

In reply to Re: Unique entries from an array by gmargo
in thread Unique entries from an array by CoffeeGuy

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