Straight from Perl Cookbook (well almost :-) 
my @all_names = qw/john andy bill andy john julia bill/;
my %seen = ();
my @names = grep { ! $seen{$_} ++ } @all_names;
print join(' ', @names);

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This prints john andy bill julia, I'm sure you'll get other variations.

Update 1: Fixed typos in code D'oh.

Update 2: As TomDLux rightly pointed out, you may wish to sort the names alphabetically, if so just change line 3 to this: 

my @names = sort grep { ! $seen{$_} ++ } @all_names;

[download]
Returning: andy bill john julia (which is what I meant to do originally but ... err... didn't)

In reply to Re: How to make an array from an array? by barrd
in thread How to make an array from an array? by Anonymous Monk

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