add 08.0.md 08.1.md

eBook/examples/chapter_8/make_maps.go

@@ -0,0 +1,21 @@
+package main
+import "fmt"
+
+func main() {
+    var mapLit map[string]int
+    //var mapCreated map[string]float32
+    var mapAssigned map[string]int
+
+    mapLit = map[string]int{"one": 1, "two": 2}
+    mapCreated := make(map[string]float32)
+    mapAssigned = mapLit
+
+    mapCreated["key1"] = 4.5
+    mapCreated["key2"] = 3.14159
+    mapAssigned["two"] = 3
+
+    fmt.Printf("Map literal at \"one\" is: %d\n", mapLit["one"])
+    fmt.Printf("Map created at \"key2\" is: %f\n", mapCreated["key2"])
+    fmt.Printf("Map assigned at \"two\" is: %d\n", mapLit["two"])
+    fmt.Printf("Map literal at \"ten\" is: %d\n", mapLit["ten"])
+}

eBook/examples/chapter_8/map_func.go

@@ -0,0 +1,11 @@
+package main
+import "fmt"
+
+func main() {
+    mf := map[int]func() int{
+        1: func() int { return 10 },
+        2: func() int { return 20 },
+        5: func() int { return 50 },
+    }
+    fmt.Println(mf)
+}