Modify Function Pointer to Take Additional Parameters

[jmh530 via Digitalmars-d-learn]

On Friday, 19 February 2016 at 11:26:56 UTC, Nicholas Wilson 
wrote:
>
> Like
>> alias fp1 = int function(int x);
>> alias fp2 = int function(int x, int y);
>>
>> auto foo(T)(T f)
>> {
>> 	static if (is(T == fp2))
>> 		return f;
>> 	else static if (is(T == fp1))
>> 	{
>> 		return int function(int x, int y) => f(x);
>> 	}
>> 	else
>> 		return 0;
>> }
>>
> ?

This code doesn't compile for me. I have to adjust it to

return function int(int x, int y) => f(x);

and then it complains that it's a delegate.