Swift Conditionals: `switch`
This tutorial belongs to the Swift series
Switch statements are a handy way to create a conditional with multiple options:
var name = "Roger"
switch name {
case "Roger":
print("Hello, mr. Roger!")
default:
print("Hello, \(name)")
}When the code of a case ends, the switch exits automatically.
A switch in Swift needs to cover all cases. If the tag, name in this case, is a string that can have any value, we need to add a default case, mandatory.
Otherwise with an enumeration, you can simply list all the options:
enum Animal {
case dog
case cat
}
var animal: Animal = .dog
switch animal {
case .dog:
print("Hello, dog!")
case .cat:
print("Hello, cat!")
}A case can be a Range:
var age = 20
switch age {
case 0..<18:
print("You can't drive!!")
default:
print("You can drive")
}download all my books for free
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