Re: ReturnType and overloaded functions

[Ali Çehreli via Digitalmars-d]

On 06/12/2015 05:04 PM, ketmar wrote:

On Fri, 12 Jun 2015 16:32:37 -0700, Ali Çehreli wrote:

On 06/12/2015 04:25 PM, Yuxuan Shui wrote:

When there are multiple overloaded functions, whose return type will I
get when I use ReturnType? Is there a way I could choose a specific
function by its parameter types?

I am curious about the answer myself but there is the workaround of
passing the overload through a lambda:

import std.traits;

int foo(long)
{
      return 0;
}

short foo(byte)
{
      return 0;
}

void main()
{
      static assert(is (ReturnType!(() => foo(long.init)) == int));
      static assert(is (ReturnType!(() => foo(byte.init)) == short));
}

Ali

or without importing `std.traits`:

   static assert(is(typeof(foo(long.init)) == int));
   static assert(is(typeof(foo(byte.init)) == short));

Good point. :) What is the difference of ReturnType then?

Ali