anonymous functions

about_anonymous_functions.go

@@ -0,0 +1,29 @@
+package go_koans
+
+func testAnonymousFunctions() {
+  {
+    i := 1
+    increment := func() {
+      i++
+    }
+    increment()
+
+    assert(i == __int__) // closures function in an obvious way
+  }
+
+  {
+    i := 1
+    increment := func(x int) {
+      x++
+    }
+    increment(i)
+
+    assert(i == __int__) // although anonymous functions need not always be closures
+  }
+
+  {
+    double := func(x int) int { return x * 2 }
+
+    assert(double(3) == __int__) // they can do anything our hearts desire
+  }
+}

setup_koans_test.go

@@ -22,12 +22,12 @@ func TestKoans(t *testing.T) {
   //testArrays()
   //testSlices()
   //testControlFlow()
-  testEnumeration()
+  //testEnumeration()
+  testAnonymousFunctions()
 
   // TODO: ie, gameplan
   //testFiles()
   //testVariadicFunctions()
-  //testAnonymousFunctions()
   //testInterfaces()
   //testMaps()
   //testStructs()