class Counter {
var count = 0
func increment() {
count+=1
}
func incrementBy(amount: Int) {
count += amount
}
let counter = Counter()
// the initial counter value is 0
counter.increment()
// the counter's value is now 1
counter.incrementBy(amount: 5)
// the counter's value is now 6
counter.reset()
// the counter's value is now 0
func increment() {
self.count+=1
}
struct Point {
var x = 0.0, y = 0.0
func isToTheRightOf(x: Double) -> Bool {
return self.x > x
}
}
let somePoint = Point(x: 4.0, y: 5.0)
if somePoint.isToTheRightOf(x: 1.0) {
print("This point is to the right of the line where x == 1.0")
}
// Prints "This point is to the right of the line where x == 1.0"
struct Point {
var x = 0.0, y = 0.0
mutating func moveBy(x deltaX: Double, y deltaY: Double) {
x += deltaX
y += deltaY
}
}
var somePoint = Point(x: 1.0, y: 1.0)
somePoint.moveBy(x: 2.0, y: 3.0)
print("The point is now at (\(somePoint.x), \(somePoint.y))")
// Prints "The point is now at (3.0, 4.0)"
let fixedPoint = Point(x: 3.0, y: 3.0)
fixedPoint.moveBy(x: 2.0, y: 3.0)
// ini akan menimbulkan error.
struct Point {
var x = 0.0, y = 0.0
mutating func moveBy(x deltaX: Double, y deltaY: Double) {
self = Point(x: x + deltaX, y: y + deltaY)
}
}
enum TriStateSwitch {
case off, low, high
mutating func next() {
switch self {
case .off:
self = .low
case .low:
self = .high
case .high:
self = .off
}
}
}
var ovenLight = TriStateSwitch.low
ovenLight.next()
// ovenLight sama dengan to .high
ovenLight.next()
// ovenLight sama dengan to .off
class SomeClass {
static func someTypeMethod() {
// type method bisa Anda implementasikan di sini
}
}
SomeClass.someTypeMethod()
