On Tue, 12 Oct 2010 18:54:49 -0400, Jonathan M Davis <[email protected]>
wrote:
On Tuesday, October 12, 2010 15:27:41 Jesse Phillips wrote:
Jonathan M Davis Wrote:
> Unfortunately, at this point, tail const has pretty much been decided
to
> be too difficult implement and/or too difficult to do cleanly, so it's
> not in D and likely never will be. If it's mentioned in the online
docs,
> the docs need to be updated. It's been a long time since there was any
> kind of tail const in D.
>
> - Jonathan M Davis
What I have heard is that it can't be done syntactically for
references. As
Denis shows you can do it with points (and arrays) but not object
references.
There are many syntax suggestion threads so I suggest search for them
before bring it up again.
Yes, you can do it with pointers, but not with references, and it causes
problems for stuff like ranges. There have been several discussions on
it over
time, and Walter has pretty much said that it's not a feature that's
going to
happen. He spent too much time on it before without success to want to
try at it
again.
If someone were to do the work, and the syntax was bearable, it might be
considered. I think Walter no longer wants to accept any ideas without
proof that they will work -- he's already worked enough on trying to
implement tail-const.
I personally think tail const is going to be a very important feature that
will not be solvable via the library. Tail-const ranges are going to be
very important when it comes to things like collections.
-Steve
