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Looping over a list of values one at a time, two at a time and more

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

In Perl 6 the standard way to iterate over the elements of a list or an array is by using the "for" statement. A simple version of it looks like this:


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

my @fellows = <Foo Bar Baz>;
for @fellows -> $name {
    say $name;

This will print out the three values one under the other.

As an explanation syntax:

@fellows is an array with 3 elements in it.

The loop variable ($name) in the above case is automatically declared in the loop so one does not need to declare it using "my" and it is still not global. It is scoped to the block of the loop.

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Gabor Szabo
Written by Gabor Szabo

Published on 2012-01-01

Prev: The unique function


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