Data commit

Task/Apply-a-callback-to-an-array/Go/apply-a-callback-to-an-array-1.go

@@ -0,0 +1,9 @@
+package main
+
+import "fmt"
+
+func main() {
+    for _, i := range []int{1, 2, 3, 4, 5} {
+        fmt.Println(i * i)
+    }
+}

Task/Apply-a-callback-to-an-array/Go/apply-a-callback-to-an-array-2.go

@@ -0,0 +1,31 @@
+package main
+
+import "fmt"
+
+type intSlice []int
+
+func (s intSlice) each(f func(int)) {
+    for _, i := range s {
+        f(i)
+    }
+}
+
+func (s intSlice) Map(f func(int) int) intSlice {
+    r := make(intSlice, len(s))
+    for j, i := range s {
+        r[j] = f(i)
+    }
+    return r
+}
+
+func main() {
+    s := intSlice{1, 2, 3, 4, 5}
+
+    s.each(func(i int) {
+        fmt.Println(i * i)
+    })
+
+    fmt.Println(s.Map(func(i int) int {
+        return i * i
+    }))
+}