Day10: tuples are iterable.

day10.cr

@@ -12,10 +12,6 @@ struct Tuple(*T)
   def -(other)
     {self[0]-other[0], self[1] - other[1]}
   end
-
-  def dist
-    self[0] + self[1]
-  end
 end
 
 input = input(2019, 10)
@@ -53,7 +49,7 @@ end
 angle_groups.delete({0,0})
 angle_groups.each do |k, v|
   v.sort! do |a|
-    (a - p2s).dist
+    (a - p2s).sum
   end
 end