Is there any way to get a reference/alias to the instantiation of
a template function that would be called, given certain
parameters? I.e. to get the result of whatever template parameter
inference (and overload resolution) has occurred?
E.g. for some arbitrarily complex foo:
static assert(__traits(compiles, foo(3)));
alias fooWithInt = someMagic(foo(3));
so if foo was `void foo(T)(T t) {}` then `fooWithInt` would be
`foo!int`, but if it was `void foo(Q = float, T = long)(T t)`
then `fooWithInt` would be `foo!(float, int)`
