On Tuesday, 25 August 2015 at 12:06:08 UTC, Mike Parker wrote:
Is there a way to determine whether a given symbol is an alias?
Consider this:
```
module funcs;
alias FuncPtr = void function();
@ChooseMe FuncPtr funcPtr;
alias anotherName = funcPtr;
```
Handing this module off to __traits(allMembers), then checking
for the UDA on each member, I can filter out FuncPtr just fine.
Unfortunately, anotherName passes the test, but I don't want it
to. Is there anyway I can distinguish the anotherName alias
from funcPtr without tagging it with a UDA? I can't find any
sort of isAlias trait anywhere.
I've been doing work on this recently. As far as I can tell,
there is no way to do this. The problem is that an alias behaves
exactly like the thing being aliased since it's just a name
replacement, so there are no giveaways like being unable to take
its address like enums. Aliases are more or less invisible.
Hence, having an isAlias trait would be a really good idea.
