Try it Yourself: Swift Optionals

Swift Optionals

Language: Swift

var age: Int? = 25
var nickname: String? = nil

print(age)       // Optional(25)
print(nickname)  // nil

age = nil

var age: Int? = 25
var nickname: String? = nil

print(age)       // Optional(25)
print(nickname)  // nil

age = nil

Output

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