Improvement: can.list.pushAll and can.list.unshiftAll shortcuts

[isadovskiy]

Currently it's not convenient to push/unshift arrays to can.List instances.

var  arr = ['one', 'two', 'three'];
some.deeply.nested.list.push.apply(some.deeply.nested.list, arr);

Can apporpriate shortcuts methods be added to can.List?

    pushAll: function (items) {
        return this.push.apply(this, items);
    },

    unshiftAll: function (items) {
        return this.unshift.apply(this, items);
    }

And then we just have

some.deeply.nested.list.pushAll(arr);

[wclr]

concat opeartion maybe added as well

[isadovskiy]

From Docs: concat makes a new List with the elements of the List followed by the elements of the parameters.

So it's already in place.

[wclr]

good

[justinbmeyer]

@isadovskiy Although I find myself doing the apply trick all the time ... I'm wary of having methods on "core" can.List outside of what browsers provide on Array. For example, we added filter, but filter is even in IE9: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter.

Is there a pushAll on Array?

If not, I would rather see this go in a list extension plugin that we've wanted to add since we created CanJS, but have never had the time. If you'd like to work on that, we can add things like this there.

[wclr]

I think such small things are not reasonable to deliver in plugin as well. It can always be placed on prototype of those classes that need it.

But List.every https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every would be useful as well as List.some https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some.

[justinbmeyer]

Closing for #192.