class Point{
   fcn init(_x,_y){ var[const] x=_x, y=_y; }
   fcn distance(p){ (p.x-x).hypot(p.y-y) }
   fcn toString   { String("Point(",x,",",y,")") }
}

   // find closest two points using brute ugly force:
   // find all combinations of two points, measure distance, pick smallest
fcn closestPoints(points){
   pairs:=Utils.Helpers.pickNFrom(2,points);
   triples:=pairs.apply(fcn([(p1,p2)]){ T(p1,p2,p1.distance(p2)) });
   triples.reduce(fcn([(_,_,d1)]p1,[(_,_,d2)]p2){
      if(d1 < d2) p1 else p2
   });
}