How to invoke superclass initialisation? about ring.js

[nicolas-van]

Usually, when you inherit from a single class, you can just use this.$super(). When you have 2 parents and no diamond inheritance, to call the 2 constructors you have to simply call them using the classes prototypes:

var C = ring.create([A, B], {
    init: function(x, y) {
        A.prototype.init.call(this, x);
        B.prototype.init.call(this, y);
    }
});

If there is single inheritance, the constructors are supposed to have the same arguments. You can just call $super:

var Z = ring.create({...});

var A = ring.create([Z], {...});
var B = ring.create([Z], {...});

var C = ring.create([A, B], {
    init: function(x) {
        this.$super(x);
    }
});

The initmethod of Z, A, B and C will all be called once, in the order of the method resolution order.