How can I express the type of a function in D?

[FrankLike]

On Wednesday, 30 January 2019 at 05:14:20 UTC, Sobaya wrote:
> I want to get a mangled name of a D function by 
> `core.demangle.mangle`, but I'm in trouble because there are no 
> ways to express a type of a function, which is used for a 
> template argument of `mangle`.
>
> For example, it is wrong to use the type `int 
> function(int,int)` to express the type of `int add(int,int)`.
> Because it expresses the type of a function POINTER, not just a 
> function.
>
> The fuction name in a binary compiled this function is 
> "_D3addFiiZi", but `mangle!(int function(int,int))("add")` 
> returns "_D3addPFiiZi", which includes "P" meaning POINTER.
>
> How can I get the former one?
>
> Thanks.

import std.stdio;
alias int*  PINT;

void main()
{
	auto x= Add(1,2);
	writeln(x);
	writeln(&x);
	executeShell("pause");
}

private PINT Add(int a,int b)
{
	return cast(PINT)(a+b);
}

////////////////CODE END//////////
It works ok.