alias and extern(C) for callbacks

[Carl Sturtivant]

On Friday, 23 August 2013 at 00:00:13 UTC, Andrej Mitrovic wrote:
> On Thursday, 22 August 2013 at 23:55:44 UTC, Carl Sturtivant 
> wrote:
>> Is Callback here a name for the same type as if it was defined 
>> by the following?
>>
>>  alias extern(C) int function(int, int) Callback;
>
> Yes. If you want to make sure, you can use a trait:
>
> import std.traits;
>
> extern(C) { void test1() { } }
> void test2() { }
>
> static assert(functionLinkage!test1 == "C");
> static assert(functionLinkage!test2 != "C");  // D calling 
> convention

Nice! Thank you.