partially applied for composition

src/main/scala/stdlib/PartiallyAppliedFunctions.scala

@@ -51,6 +51,21 @@ object PartiallyAppliedFunctions
     multiplyCurriedFour(4) should be(res4)
   }
 
+  /**
+    * Currying also allows you to compose functions that have multiple parameter, since normally it's not possible:
+    */
+  def curriedForComposition(res0: Int, res1: Int) {
+    def multiply(x: Int, y: Int) = x * y
+    val multiplyCurried = (multiply _).curried
+    def addOne(x: Int) = x + 1
+
+    val composedFunction = addOne _ compose multiplyCurried(2)
+    composedFunction(3) should be(res0)
+
+    val andThenComposedFunction = multiplyCurried(2) andThen addOne
+    andThenComposedFunction(4) should be(res1)
+  }
+
   /** Currying allows you to create specialized versions of generalized functions:
    */
   def specializedVersionPartiallyAppliedFunctions(res0: List[Int], res1: List[Int]) {

src/test/scala/stdlib/PartiallyAppliedFunctionsSpec.scala

@@ -47,4 +47,13 @@ class PartiallyAppliedFunctionsSpec extends Spec with Checkers {
       )
     )
   }
+
+  def `composing` = {
+    check(
+      Test.testSuccess(
+        PartiallyAppliedFunctions.curriedForComposition _,
+        7 :: 9 :: HNil
+      )
+    )
+  }
 }