Raku Books / Perl 6 at a Glance / Code Organization / Subroutines, or subs

Nested subs

Nested subs are allowed in Perl 6.

sub cube($x) {
    sub square($x) {
        return $x * $x;
    }

    return $x * square($x);
}

say cube(3); # 27

The name of the inner sub square is only visible within the body of the outer sub cube.

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