Hi again, I have this simple toy code :
import point; import std.random; import std.algorithm; import std.functional; void getRandomPoint(R)(R randVar, ref Point p) { p.x = randVar; p.y = randVar; p.z = randVar; } void main() { Point[500] points; auto randVar = uniform(0.0f, 1.0f); alias test = partial!(getRandomPoint, randVar); points.map!(test); } And get the following error : kmeans_example.d(79): Error: template std.algorithm.iteration.map cannot deduce function from argument types !(partial)(Point[500]), candidates are: /usr/include/dmd/phobos/std/algorithm/iteration.d(434): std.algorithm.iteration.map(fun...) if (fun.length >= 1) Btw, I don't understand why : auto test = partial!(getRandomPoint, randVar); dont work...partial doesnt return a delegate it seems...:/