Getting .init of a Typetuple

[Philippe Sigaud]

On Thu, Aug 19, 2010 at 21:51, Simen kjaeraas <simen.kjaras at gmail.com>wrote:

> Johannes Pfau <spam at example.com> wrote:
>
>  Hi,
>> I want to do exactly the same as described in
>> http://d.puremagic.com/issues/show_bug.cgi?id=4536 . The problem is I
>> can't even get the workaround to work. Dmd complains about the following
>> template:
>> ---------------------------------------------------------------
>> template Init(T...)
>> {
>
>  alias (Tuple!T.init).expand Init;
>> }
>>
>
Hmm, I'm pretty sure it used to worked, because as one time that's what I
used.

Anyway, Simen's solutions is better, a bit less dependency. TypeTuple is a
bit more universal than Tuple.

Simen:

>
> template Init( T ) {
>    alias TypeTuple!( T.init ) Init;
> }
>
> template Init( T, U... ) {
>    alias TypeTuple!( T.init, Init!U ) Init;
> }
>
>
And, looking in my codebase, here is what I'm using ;)

template Init(T...)
{
    T Init;
}

It's so simple...
I think I found this before the bug report and then forgot about it and
copied an old version. I'll update the bug report accordingly, if the latter
version works for you.

Philippe
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