On Wednesday, 11 April 2018 at 14:26:53 UTC, ixid wrote:
Is it possible to infer a template's return type from what it's
assigned to? If not is this a difficult or worthless feature to
add?
Not really. The function call needs to make sense by itself:
fun(a)
needs to be a complete thing for a lot of things in the language
to work. Type checking assumes it is there, inference assumes it
is there, overloading assumes it s there, etc.
void foo(int);
void foo(float);
foo(fun(a)); // what happens?
So I don't say anything is impossible that isn't a paradox... but
the effort level to solve all these problems would be really high
for D.
