Why is the error message coming by the end of the compilation?

[Steven Schveighoffer]

On 4/14/18 4:16 AM, bauss wrote:
> 
> I tried to use __traits(compiles) but it always returns false for the 
> code I'm going to mixin, even though it's valid, that was my initial go 
> to, so this is really a second attempt on something to give meaningful 
> error messages when certain mixins don't compile.
> 

Hm.. that seems annoying. I'd guess you'd get simple tests to work, 
maybe it's the way you are using __traits(compiles).

If all else fails, back out to the place where you are using it. At some 
point, it is a function call. Just wrap that call, and check if it 
compiles or not.

e.g.:

static assert(__traits(compiles, theFunction(theItem), "this code won't 
compile: " ~ theItem.source);

// if we get here, it will compile
theFunction(theItem);

D can be quite perplexing when you have so much meta in it :)

-Steve