Allowing stroke to be of type String isn't very type-safe. Inside the SwimmingWorkout struct, create an enum called Stroke that has cases for freestyle, butterfly, backstroke, and breaststroke. Change the type of stroke from String to Stroke. Create two instances of SwimmingWorkout objects. Now imagine you want to log swimming workouts separately based on the swimming stroke. You might use arrays as static variables on SwimmingWorkout for this. Add four static variables, freestyleWorkouts, butterflyWorkouts, backstrokeWorkouts, and breaststrokeWorkouts, to SwimmingWorkout above. Each should be of type [SwimmingWorkout] and should default to empty arrays. Now add an instance method to SwimmingWorkout called save that takes no parameters and has no return value. This method will add its instance to the static array on SwimmingWorkout that corresponds to its swimming stroke. Inside save write a switch statement that switches on the instance's stroke property, and appends self to the proper array. Call save on the two instances of SwimmingWorkout that you created above, and then print the array(s) to which they should have been added to see if your save() method works properly.
Allowing stroke to be of type String isn't very type-safe. Inside the SwimmingWorkout struct, create an enum called Stroke that has cases for freestyle, butterfly, backstroke, and breaststroke. Change the type of stroke from String to Stroke. Create two instances of SwimmingWorkout objects. Now imagine you want to log swimming workouts separately based on the swimming stroke. You might use arrays as static variables on SwimmingWorkout for this. Add four static variables, freestyleWorkouts, butterflyWorkouts, backstrokeWorkouts, and breaststrokeWorkouts, to SwimmingWorkout above. Each should be of type [SwimmingWorkout] and should default to empty arrays. Now add an instance method to SwimmingWorkout called save that takes no parameters and has no return value. This method will add its instance to the static array on SwimmingWorkout that corresponds to its swimming stroke. Inside save write a switch statement that switches on the instance's stroke property, and appends self to the proper array. Call save on the two instances of SwimmingWorkout that you created above, and then print the array(s) to which they should have been added to see if your save() method works properly.
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How do I do this exercise on Enumerations using Swift code? Please find the image attached below.
enum Stroke {
case freestyle, butterfly, backstroke, breaststroke
}
struct SwimmingWorkout {
var distance: Double
var time: Double
var stroke: Stroke?
init(distance:Double, time:Double) {
self.distance = distance
self.time = time
}
}
let InstanceA = SwimmingWorkout(distance:41, time: 10)
let InstanceB = SwimmingWorkout(distance:53, time: 14)
![Allowing stroke to be of type String isn't very type-safe. Inside the SwimmingWorkout struct, create an enum called Stroke that has cases for freestyle, butterfly, backstroke, and
breaststroke. Change the type of stroke from String to Stroke. Create two instances of SwimmingWorkout objects.
Now imagine you want to log swimming workouts separately based on the swimming stroke. You might use arrays as static variables on SwimmingWorkout for this. Add four static variables,
freestyleWorkouts, butterflyWorkouts, backstrokeWorkouts, and breaststrokeWorkouts, to SwimmingWorkout above. Each should be of type [SwimmingWorkout] and should
default to emj
rays.
Now add an instance method to SwimmingWorkout called save that takes no parameters and has no return value. This method will add its instance to the static array on SwimmingWorkout
that corresponds to its swimming stroke. Inside save write a switch statement that switches on the instance's stroke property, and appends self to the proper array. Call save on the two
instances of SwimmingWorkout that you created above, and then print the array(s) to which they should have been added to see if your save() method works properly.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbea0901b-9b71-43dc-90d5-d9e10ed3de89%2F1814295d-12c5-42e4-aa3f-a82b5684c5c4%2F1ylnbfs_processed.png&w=3840&q=75)
Transcribed Image Text:Allowing stroke to be of type String isn't very type-safe. Inside the SwimmingWorkout struct, create an enum called Stroke that has cases for freestyle, butterfly, backstroke, and
breaststroke. Change the type of stroke from String to Stroke. Create two instances of SwimmingWorkout objects.
Now imagine you want to log swimming workouts separately based on the swimming stroke. You might use arrays as static variables on SwimmingWorkout for this. Add four static variables,
freestyleWorkouts, butterflyWorkouts, backstrokeWorkouts, and breaststrokeWorkouts, to SwimmingWorkout above. Each should be of type [SwimmingWorkout] and should
default to emj
rays.
Now add an instance method to SwimmingWorkout called save that takes no parameters and has no return value. This method will add its instance to the static array on SwimmingWorkout
that corresponds to its swimming stroke. Inside save write a switch statement that switches on the instance's stroke property, and appends self to the proper array. Call save on the two
instances of SwimmingWorkout that you created above, and then print the array(s) to which they should have been added to see if your save() method works properly.
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