On Saturday, 8 April 2017 at 19:03:52 UTC, crimaniak wrote:
On Saturday, 8 April 2017 at 09:14:17 UTC, Stefan Koch wrote:
This is a question for D.Learn.
please post there.
Yes, I did it already and know, it is not possible for now:
https://forum.dlang.org/post/crkxlbtfhsplxfila...@forum.dlang.org
This is exact reason why I asked, how hard _to implement_ it. I
asked you, because UDF constructor executed in CTFE, and you
can give the most competent answer, because you are working on
it.
Also the question is to terse, I do not know what you are
asking.
How hard to implement something like special keyword
__SYMBOL__, which will be alias for Foo (or string with fully
qualified name of Foo) in example in my initial letter, in the
scope of udf constructor.
This is not related to the ctfe subsystem.
Therefore take my answer with a grain of salt.
I assume that what you want will quite expensive in terms of
compiler performance.
Also it would require a language change.
A facility as you want it would need to modify the constructor
behind the scenes, either by adding a hidden template parameter
to the constructor.
I general I would be weary about adding this facility.
Though right now I cannot see any wired corner-cases, I think
that you are going to run into trouble with this.
Particularly when forward-references are involved.
