Mixins with include in AS3

Test.as

// ActAsDog.as

public function bark(): void
{
	trace("bark");
}

// ActAsCat.as

public function meow(): void
{
	trace("meow");
}


// CatDogHybrid.as
package
{
	class CatDogHybrid
	{
		include "ActAsCat.as"
		include "ActAsDog.as"
	}
}

// Test.as

var hybrid = new CatDogHybrid();
	hybrid.meow() // meow
	hybrid.bark() // bark

brrr, why even use strongly typed classes at all, then?

Strong typing is overrated :)
Just kidding, I would just love to have mixins as a language feature in AS3 and do: class CatDogHybrid with ActAsDog, ActAsCat
Composition introduces so much boiler-plate.

:) Me too - apart from higher-order typing for functions the lack of mixins (or, much better yet: traits) is my single-most important gripe with the language.