Const initialization issue, looking for solution

[Andrei Alexandrescu]

On 5/29/13 9:25 AM, Jakob Ovrum wrote:
> On Wednesday, 29 May 2013 at 13:19:34 UTC, deadalnix wrote:
>> I guess the first assignment of a variable should be considered as a
>> declaration unless it has been read in between. This is the same
>> problem as immutable constructor, and also relate to extra copies
>> elimination.
>
> Yeah, and languages like C# solve these problems quite beautifully. I
> don't think there's a reason we can't do almost the same thing in D,
> except it requires implementation effort and overcoming Walter's
> protests. Regardless, it's probably not something to expect in the
> short-term.

How does C# solve it?

> I was unable to leverage std.exception. collectException looks promising
> at first glance - and maybe if the return value and out parameter were
> switched, it would work - but then I suspect the function's
> implementation would face exactly the same problem.

I must have missed part of this - how would the desired setup work?


Andrei