Course of Raku / Objects, I/O, and exceptions / Classes and objects / Methods

Methods calling methods

A method can call another method on the same object through self:

class Circle {
    has $.radius;

    method area {
        3.14 * $.radius * $.radius;
    }

    method describe {
        'The area is ' ~ self.area;
    }
}

my $c = Circle.new(radius => 2);
say $c.describe; # The area is 12.56

Inside describe, the call self.area runs the area method on the same circle, and its result is used to build the description.

You write self.area — with the dot — to call a method, just as an outside caller would call it on an instance, e.g.: $c.describe. This lets you build more complex behaviour out of smaller methods, each doing one job.

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