Swift Classes/Objects
Swift Classes/Objects
Define reference types with stored properties and methods.
Instances share identity and are passed by reference.
Define a Class
Create a class with stored properties and methods, then instantiate and call methods on the instance.
Example
class Counter {
var value = 0
func inc() { value += 1 }
}
let c = Counter(); c.inc()BankAccount
Use an initializer to set up state and instance methods to mutate it.
Example
class BankAccount {
var balance: Int
init(balance: Int) { self.balance = balance }
func deposit(_ amount: Int) { balance += amount }
}
let acc = BankAccount(balance: 100)
acc.deposit(25)
print(acc.balance) // 125
