Metaobject that supports the C3 method resolution order
Warning: this role is part of the Rakudo implementation, and is not a part of the language specification.
The method resolution order for a type is a flat list of types including the type itself, and (recursively) all super classes. It determines in which order the types will be visited for determining which method to call with a given name, or for finding the next method in a chain with nextsame, callsame, nextwith or callwith.
; # implicitly inherits from Anyis CommonAncestoris CommonAncestoris Child2is Child1 is GrandChild2 ;say Weird.^mro; # OUTPUT: «(Weird) (Child1) (GrandChild2) (Child2) (CommonAncestor) (Any) (Mu)␤»
C3 is the default resolution order for classes and grammars in Raku. Note that roles generally do not appear in the method resolution order (unless they are punned into a class, from which another type inherits), because methods are copied into classes at role application time.
Computes the method resolution order.
Returns a list of types in the method resolution order, even those that are marked
say Int.^mro; # OUTPUT: «((Int) (Cool) (Any) (Mu))␤»
Returns a list of types in method resolution order, excluding those that are marked with