using.swift

func using<T: AnyObject>(object: T, execute: (T) throws -> Void) rethrows -> T {
  try execute(object)
  return object
}

import UIKit

// Then in some configureView() function of an UIViewController or whatnot…

let label1 = using(UILabel()) {
  $0.backgroundColor = .blackColor()
  $0.textColor = .whiteColor()
  $0.textAlignment = .Center
  $0.text = "Hello"
}

let label2 = using(UILabel()) {
  $0.backgroundColor = .whiteColor()
  $0.textColor = .blueColor()
  $0.textAlignment = .Natural
  $0.text = "World"
}

let view = using(UIView()) {
  $0.backgroundColor = .yellowColor()
  $0.addSubview(label1)
  $0.addSubview(label2)
}