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The unique function

Note! This site is about Perl 6.
If you are looking for a solution for Perl 5, please check out the Perl 5 tutorial.


#!/usr/bin/env perl6
use v6;

my @duplicates = 1, 1, 2, 5, 1, 4, 3, 2, 1;
say @duplicates.perl;
# prints [1, 1, 2, 5, 1, 4, 3, 2, 1]

my @unique = unique @duplicates;
say @unique.perl;

# prints [1, 2, 5, 4, 3]

my @chars = <b c a d b a a a b>;
say @chars.perl;

# prints ["b", "c", "a", "d", "b", "a", "a", "a", "b"]

my @singles = unique @chars;
say @singles.perl;

# prints ["b", "c", "a", "d"]

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Gabor Szabo
Written by Gabor Szabo

Published on 2012-01-01

Prev: join


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