fix: map exercises

22-maps/exercises/01-warm-up/main.go

@@ -21,7 +21,7 @@ func main() {
 
 	// #1
 	// Key        : Last name
-	// Element    : Last name
+	// Element    : Phone number
 
 	// #2
 	// Key        : Product ID

22-maps/exercises/01-warm-up/solution/main.go

@@ -13,7 +13,7 @@ func main() {
 	var (
 		phones map[string]string
 		// Key        : Last name
-		// Element    : Last name
+		// Element    : Phone number
 
 		// Key        : Product ID
 		// Element    : Available / Unavailable

22-maps/exercises/02-populate/main.go

@@ -6,7 +6,7 @@ package main
 //  Add elements to the maps that you've declared in the
 //  first exercise, and try them by looking up for the keys.
 //
-//  Use map literals.
+//  Either use the `make()` or `map literals`.
 //
 //  After completing the exercise, remove the data and check
 //  that your program still works.

22-maps/exercises/02-populate/solution/main.go

@@ -23,11 +23,9 @@ func main() {
 	}
 
 	multiPhones := map[string][]string{
-		"bowen": []string{"202-555-0179"},
-		"dulin": []string{
-			"03.37.77.63.06", "03.37.70.50.05", "02.20.40.10.04",
-		},
-		"greco": []string{"03489940240", "03489900120"},
+		"bowen": {"202-555-0179"},
+		"dulin": {"03.37.77.63.06", "03.37.70.50.05", "02.20.40.10.04"},
+		"greco": {"03489940240", "03489900120"},
 	}
 
 	basket := map[int]map[int]int{

22-maps/exercises/03-students/solution/main.go

@@ -22,7 +22,7 @@ func main() {
 		"bobo":       {"wizardry", "unwanted"},
 	}
 
-	// remove "bobo" house
+	// remove the "bobo" house
 	delete(houses, "bobo")
 
 	args := os.Args[1:]