On Wednesday, 19 February 2014 at 19:10:44 UTC, Frustrated wrote:
Are there container templates that one can mixin to classes that
give them container behavior?

e.g.,

instead of

class A
{
     Array!int x;
}

I want

class A
{
    mixin Array!int;
}

so that I can do something like a.Add(3) instead of a.x.Add(3).

One solution is to use alias this.

class A
{
    Array!int x;
    alias x this;
}

Then you can do a.Add(3) and the method call will be "rewritten" (I don't know if it's *actually* rewritten) as a.x.Add(3).

myints nor myfloats need to be actual elements of the class. In
fact, in this case it might be ok to override them, e.g.,
a.add(1) and a.add(5f) above.

This throws a wrench into the above solution, as you can currently only have 1 alias this. However, your idea of inner classes would work, I think.

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