Re: Is using function() in templates possible at all?

[Alex via Digitalmars-d-learn]

On Thursday, 12 April 2018 at 11:17:01 UTC, Laurent Tréguier 
wrote:
If the function is declared with explicit parameter types:

There are cool things possible, if the param type is explicitly 
typed :)

´´´
import std.traits;

void main()
{
        auto list = new SortedList!((Vector3 v) => v.y)();
        list.foo(Vector3.init);
}

struct Vector3 { float x, y, z; }

class SortedList(alias comparer) if(is(ReturnType!comparer : 
float))
{
        alias T = Parameters!comparer[0];

        T[] array;
        
        auto foo(T t)
        {
                // do stuff
        }
}
´´´