allocation

about_allocation.go

@@ -0,0 +1,23 @@
+package go_koans
+
+func testAllocation() {
+  a := new(int)
+  *a = 3
+  assert(*a == __int__) // new() creates a pointer to the given type, like malloc() in C
+
+  type person struct {
+    name string
+    age int
+  }
+  bob := new(person)
+  assert(bob.age == __int__) // it can allocate memory for custom types as well
+
+  slice := make([]int, 3)
+  assert(len(slice) == __int__) // make() creates slices of a given length
+
+  slice = make([]int, 3)
+  assert(cap(slice) == 20) // but can also take an optional capacity
+
+  m := make(map[int]string)
+  assert(len(m) == __int__) // make() also creates maps
+}

setup_koans_test.go

@@ -29,10 +29,10 @@ func TestKoans(t *testing.T) {
   //testInterfaces()
   //testMaps()
   //testPointers()
-  testStructs()
+  //testStructs()
+  testAllocation()
 
   // TODO: ie, gameplan
-  //testAllocation()
   //testGoroutines()
   //testChannels()
   //testPanics()