fix: coding style and file format for all example.

eBook/examples/chapter_8/map_testelement.go

@@ -1,33 +1,33 @@
-package main
-
-import "fmt"
-
-func main() {
-	var value int
-	var isPresent bool
-
-	map1 := make(map[string]int)
-	map1["New Delhi"] = 55
-	map1["Bejing"] = 20
-	map1["Washington"] = 25
-
-	value, isPresent = map1["Bejing"]
-	if isPresent {
-		fmt.Printf("The value of \"Bejing\" in map1 is: %d\n", value)
-	} else {
-		fmt.Println("map1 does not contain Bejing")
-	}
-
-	value, isPresent = map1["Paris"]
-	fmt.Printf("Is \"Paris\" in map1 ?: %t\n", isPresent)
-	fmt.Printf("Value is: %d\n", value)
-
-	// delete an item:
-	delete(map1, "Washington")
-	value, isPresent = map1["Washington"]
-	if isPresent {
-		fmt.Printf("The value of \"Washington\" in map1 is: %d\n", value)
-	} else {
-		fmt.Println("map1 does not contain Washington")
-	}
-}
+package main
+
+import "fmt"
+
+func main() {
+	var value int
+	var isPresent bool
+
+	map1 := make(map[string]int)
+	map1["New Delhi"] = 55
+	map1["Bejing"] = 20
+	map1["Washington"] = 25
+
+	value, isPresent = map1["Bejing"]
+	if isPresent {
+		fmt.Printf("The value of \"Bejing\" in map1 is: %d\n", value)
+	} else {
+		fmt.Println("map1 does not contain Bejing")
+	}
+
+	value, isPresent = map1["Paris"]
+	fmt.Printf("Is \"Paris\" in map1 ?: %t\n", isPresent)
+	fmt.Printf("Value is: %d\n", value)
+
+	// delete an item:
+	delete(map1, "Washington")
+	value, isPresent = map1["Washington"]
+	if isPresent {
+		fmt.Printf("The value of \"Washington\" in map1 is: %d\n", value)
+	} else {
+		fmt.Println("map1 does not contain Washington")
+	}
+}