On Tue, 27 Mar 2012 11:26:08 -0400, Stewart Gordon <smjg_1...@yahoo.com>
wrote:
On 27/03/2012 16:12, Stewart Gordon wrote:
On 26/03/2012 14:37, Steven Schveighoffer wrote:
<snip>
So for now, I use the undocumented old-style functions. One other
thing that this
"wrapper" method loses is covariance, which I use a lot in
dcollections. I haven't filed a
bug on it, but there is at least a workaround on this one -- the
template can capture the
type of "this" from the call site as a template parameter.
I can't seem to get this to work at the moment:
<snip>
Just figured how to do it.
T method(this T)() {
return cast(T) this;
}
Talk about having not got into D2 programming before....
One tip -- if you are doing method as above inside a class and not an
interface, you can use:
cast(T)cast(void*)this;
which should avoid the unnecessary dynamic cast. This will *not* work in
an interface. I'd argue the compiler should be aware of the special type
of T for doing casts...
-Steve
