class X::Mixin::NotComposable is Exception { }

Thrown when a mixin with infix does or but is done with a composer that cannot be used for mixin.

For example

class B { };
    1 but B;
    CATCH { default { put .^name, ': ', .Str } };
    # OUTPUT: «X::Mixin::NotComposable: Cannot mix in non-composable type B into object of type Int␤»

The compile-time equivalent of this error is X::Composition::NotComposable.

Methods

method target

method target()

Returns the target of the failed mixin operation.

method rolish

method rolish()

Returns the thing that could not act as a role for mixing it in