On Thursday, 29 September 2016 at 13:58:44 UTC, Eugene Wissner
wrote:
Any chance to get this one working:
import std.typecons;
enum Stuff
{
asdf,
}
void main()
{
BitFlags!Stuff a;
mixin(__traits(fullyQualifiedName, typeof(a)) ~ " c;");
}
This wouldn't be a correct use of the feature anyway, since it
runs into all sorts of fundamental issues with imports/scoping,
aliases and templates. Using .stringof/fullyQualifiedName to
generate a reference to a type or symbol in a string mixin is a
mistake, period. Unfortunately, the misconception that they *are*
code generation tools is fairly wide-spread, to the point where
dlang.org contains a similarly misleading comment. [1]
Just emit the typeof expression into the mixin string, e.g.
`mixin("typeof(a) c;");`. It should be fairly easy to convince
yourself that a similar rewrite is always possible, even if it is
sometimes less obvious (in some situations, you might need to
change some code to, say, pass on a template parameter `T` all
the way to the point of the mixin() call instead of `T.stringof`).
— David
[1] https://github.com/dlang/dlang.org/pull/380
