---

Functions

• sub
• &

tutorial/p526/functions.p6

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

my $lang = "Perl";

creator("Larry", $lang);
sub creator {                               # still works as in Perl5 and you get the values in @_
    my ($person, $language) = @_;           # you can copy them
    say "the creator of $language is $person";
}

creator_2("Larry", $lang);
sub creator_2 ($person, $language) {            # you can also defined the expected parameters
    #$language ~= 6;                            # but in this case you cannot change the variables
    say "the creator of $language is $person";  
}

creator_3("Larry", $lang);
sub creator_3 ($person, $language is rw) {            # you can also defined the expected parameters
    $language ~= 6;                                   # now you can change the $language variable but
    say "the creator of $language is $person";  
}
say "What ? $lang";                                   # and it also changes the parameter itself.


creator_4("Larry", $lang);
sub creator_4 ($person is copy, $language is rw) {
    $person ~= " Wall";
    say "the creator of $language is $person";  
}

---

The Perl 6 Tricks and Treats newsletter has been around for a while. If you are interested to get special notification when there is new content on this site, it is the best way to keep track:

Email:
Full name:

This is a newsletter temporarily running on my personal site (szabgab.com) using Mailman, till I implement an alternative system in Perl 6.

---

Written by Gabor Szabo

---

Published on 2012-01-01

---

---

Comments

In the comments, please wrap your code snippets within <pre> </pre> tags and use spaces for indentation. comments powered by Disqus

Suggest a change
Elapsed time: 3.49379317

Perl 6 Tricks and Treats newsletter

Register to the free newsletter now, and get updates and news.

Email:
Name:

Tweet