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Re: Way to use Moo::Role to extend non-Moo class?

by tobyink (Abbot)
on Nov 13, 2013 at 12:04 UTC ( #1062378=note: print w/replies, xml ) Need Help??

in reply to Way to use Moo::Role to extend non-Moo class?

Roles don't "extend" classes. Subclasses extend classes.

This will work:

package Foo { sub new { bless {}, shift; } sub foo { print "foo\n"; } } package Bar { use Moo; # NOT Moo::Role extends "Foo"; }

... but if the constructor for class Foo is any more complicated than the above, you'll need to write a FOREIGNBUILDARGS method for Bar to tell Bar's constructor what argument need to be passed along to Foo's constructor.

use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name

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