Is using function() in templates possible at all?

[Laurent Tréguier]

On Thursday, 12 April 2018 at 11:53:21 UTC, Alex wrote:
> 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
> 	}
> }
> ´´´

Getting rid of redundancy. Now that's nice !