Hi guys!
I have two pieces of code. Both are working. They are using structures.
In this code I needn't initialize result. Probably because it was already done in the definition. What troubles me though is the code beneath. It also works until I change the let of surName to a var. Suddenly the memberwise initializer expects me to initialize surName. This seems contradictory to the code above?
Is think it's because the initializer of Name still requires a parameter and CalculatorBrain doesn't?
I have two pieces of code. Both are working. They are using structures.
Code:
struct CalculatorBrain {
var result: Double = 0 {
didSet(oldResult){
print("the result changes from \(oldResult) to \(result)")
}
}
mutating func add(_ augend: Double){
result += augend
}
}
var myCalculatorBrain = CalculatorBrain()
myCalculatorBrain.result
myCalculatorBrain.add(15.2)In this code I needn't initialize result. Probably because it was already done in the definition. What troubles me though is the code beneath. It also works until I change the let of surName to a var. Suddenly the memberwise initializer expects me to initialize surName. This seems contradictory to the code above?
Code:
struct Name {
let surName: String = "Doo"
var firstName: String
var fullName: String {
return firstName + " " + surName
}
}
var nameFirstKid = Name(firstName: "John")
nameFirstKid.fullName
var nameSecondKid = Name(firstName: "Josephine")
nameSecondKid.fullName
nameSecondKid.firstName = "Claire"
nameSecondKid.fullNameIs think it's because the initializer of Name still requires a parameter and CalculatorBrain doesn't?
Last edited:
