changed playground to make it less error prone and easier to add programs

playground/playground.go

@@ -8,56 +8,118 @@ import (
 )
 
 func main() {
+	type program struct {
+		name           string
+		launchFunction func()
+	}
+
+	programs := []program{
+		{
+			name: "Pass or Fail",
+			launchFunction: func() {
+				passFail()
+			},
+		},
+		{
+			name: "Guessing Game",
+			launchFunction: func() {
+				guess()
+			},
+		},
+		{
+			name: "Shopping List",
+			launchFunction: func() {
+				shopping()
+			},
+		},
+		{
+			name: "Commandline Test",
+			launchFunction: func() {
+				terminalTest()
+			},
+		},
+		{
+			name: "Wall Area",
+			launchFunction: func() {
+				wallArea()
+			},
+		},
+		{
+			name: "myIntPointer",
+			launchFunction: func() {
+				myIntPointer()
+			},
+		},
+		{
+			name: "Double",
+			launchFunction: func() {
+				double()
+			},
+		},
+		{
+			name: "Convert To Celsius",
+			launchFunction: func() {
+				toCelsius()
+			},
+		},
+		{
+			name: "Get the Average My Solution",
+			launchFunction: func() {
+				averageMySolution()
+			},
+		},
+		{
+			name: "Get the Average Head First Solution",
+			launchFunction: func() {
+				averageHeadFirstSolution()
+			},
+		},
+		{
+			name: "Get the Average Variadic",
+			launchFunction: func() {
+				averageVariadic()
+			},
+		},
+		{
+			name: "Slices",
+			launchFunction: func() {
+				slices()
+			},
+		},
+		{
+			name: "Variadic Functions",
+			launchFunction: func() {
+				variadic()
+			},
+		},
+		{
+			name: "Count Votes",
+			launchFunction: func() {
+				countVotes()
+			},
+		},
+		{
+			name: "Magazine Subscribers",
+			launchFunction: func() {
+				magazineSubscribers()
+			},
+		},
+	}
 	menu := wmenu.NewMenu("Choose a program.")
 	menu.Action(func(opts []wmenu.Opt) error {
 		fmt.Printf("You chose " + opts[0].Text + ". Launching...\n")
-		switch opts[0].Text {
-		case "Pass or Fail":
-			passFail()
-		case "Guessing Game":
-			guess()
-		case "Shopping List":
-			shopping()
-		case "Commandline Test":
-			terminalTest()
-		case "Wall Area":
-			wallArea()
-		case "myIntPointer":
-			myIntPointer()
-		case "Double":
-			double()
-		case "Convert To Celsius":
-			toCelsius()
-		case "Get the Average My Solution":
-			averageMySolution()
-		case "Get the Average Head First Solution":
-			averageHeadFirstSolution()
-		case "Get the Average Variadic":
-			averageVariadic()
-		case "Slices":
-			slices()
-		case "Variadic Functions":
-			variadic()
-		case "Count Votes":
-			countVotes()
+		for _, v := range programs {
+			if v.name == opts[0].Text {
+				v.launchFunction()
+			}
 		}
+
 		return nil
 	})
 	menu.PadOptionID()
-	menu.Option("Pass or Fail", nil, false, nil)
-	menu.Option("Guessing Game", nil, false, nil)
-	menu.Option("Shopping List", nil, false, nil)
-	menu.Option("Commandline Test", nil, false, nil)
-	menu.Option("Wall Area", nil, false, nil)
-	menu.Option("myIntPointer", nil, false, nil)
-	menu.Option("Double", nil, false, nil)
-	menu.Option("Convert To Celsius", nil, false, nil)
-	menu.Option("Get the Average My Solution", nil, false, nil)
-	menu.Option("Get the Average Head First Solution", nil, false, nil)
-	menu.Option("Get the Average Variadic", nil, false, nil)
-	menu.Option("Slices", nil, false, nil)
-	menu.Option("Variadic Functions", nil, false, nil)
-	menu.Option("Count Votes", nil, false, nil)
+	for _, option := range programs {
+		menu.Option(option.name, nil, false, nil)
+	}
 	err := menu.Run()
 	if err != nil {
 		log.Fatal(err)