Builder
protocol ThreeDimensions {
var x: Double? {get}
var y: Double? {get}
var z: Double? {get}
}
class Point : ThreeDimensions {
var x: Double?
var y: Double?
var z: Double?
typealias PointBuilderClosure = (Point) -> ()
init(buildClosure: PointBuilderClosure) {
buildClosure(self)
}
}let fancyPoint = Point { point in
point.x = 0.1
point.y = 0.2
point.z = 0.3
}
fancyPoint.x
fancyPoint.y
fancyPoint.z
Shorter but oh-so-ugly alternative:
let uglierPoint = Point {
$0.x = 0.1
$0.y = 0.2
$0.z = 0.3
}