Refactor

Author: kamil-adam

catculator-core/src/main/scala/pl/writeonly/catculator/core/adt/calculus/Constants.scala

@@ -18,10 +18,9 @@ object Constants {
 
   def appK(a: CombinatorBT): Node[Combinator] = Node(kCom, a)
 
-  def app4(c1: CombinatorBT, c2: CombinatorBT, c3: CombinatorBT, c4: CombinatorBT): CombinatorBT = Node(c1, app3(c2, c3, c4))
+  def app4(c1: CombinatorBT, c2: CombinatorBT, c3: CombinatorBT, c4: CombinatorBT): CombinatorBT = Node(app3(c1, c2, c3), c4)
 
-  def app3(c1: CombinatorBT, c2: CombinatorBT, c3: CombinatorBT): CombinatorBT = Node(c1, Node(c2, c3))
+  def app3(c1: CombinatorBT, c2: CombinatorBT, c3: CombinatorBT): CombinatorBT = Node(Node(c1, c2), c3)
 
   def com(c: Combinator): CombinatorBT = Leaf(c)
-
 }