On Wednesday, 19 February 2014 at 19:44:12 UTC, Meta wrote:
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.
yeah, I basically want to avoid typing a lot and reuse code. I
could create a template that is essentially all the code from
your standard container object(probably just rename class to
template) and mix it in. The problem is that there will be a lot
of methods in the class... probably not a real issue. I could use
the types directly. Not sure, though, the benefit of using
templates over inheritance/inner classes.
Just trying to avoid a lot of typing and have an efficient
solution. I have several classes with array inside them and I
want to convert them so that I can add "hooks" later(do stuff
when elements are added/etc easily... without the overhead of
delegates or events that one might normally use for RT behavior).
templates seem like the solution but now sure if there such an
array/container already exists so I can "plug and play".
