Swift Package Index


✨ Super sweet syntactic sugar for Swift initializers


  • The latest stable release is 2.7.0. Released 7 months ago.
  • The last commit to master was 7 months ago.

Swift Version Compatibility

  • 2.7.0 and master
    5.3
    5.2
    5.1
    5.0
    4.2
Full build results

Platform Compatibility

  • 2.7.0 and master
    iOS
    macOS(Intel)
    macOS(ARM)
    Linux
    tvOS
    watchOS
Full build results

Then

Swift CocoaPods Build Status

✨ Super sweet syntactic sugar for Swift initializers.

At a Glance

Initialize UILabel then set its properties.

let label = UILabel().then {
  $0.textAlignment = .center
  $0.textColor = .black
  $0.text = "Hello, World!"
}

This is equivalent to:

let label: UILabel = {
  let label = UILabel()
  label.textAlignment = .center
  label.textColor = .black
  label.text = "Hello, World!"
  return label
}()

Tips and Tricks

  • You can use then() to all of NSObject subclasses.

    let queue = OperationQueue().then {
      $0.maxConcurrentOperationCount = 1
    }
    
  • Want to use with your own types? Just make extensions.

    extension MyType: Then {}
    
    let instance = MyType().then {
      $0.really = "awesome!"
    }
    
  • Use with() when copying the value types.

    let newFrame = oldFrame.with {
      $0.size.width = 200
      $0.size.height = 100
    }
    newFrame.width // 200
    newFrame.height // 100
    
  • Use do() to do something with less typing.

    UserDefaults.standard.do {
      $0.set("devxoul", forKey: "username")
      $0.set("devxoul@gmail.com", forKey: "email")
      $0.synchronize()
    }
    

Real World Example

Here's an example usage in an UIViewController subclass.

final class MyViewController: UIViewController {

  let titleLabel = UILabel().then {
    $0.textColor = .black
    $0.textAlignment = .center
  }

  let tableView = UITableView().then {
    $0.backgroundColor = .clear
    $0.separatorStyle = .none
    $0.register(MyCell.self, forCellReuseIdentifier: "myCell")
  }

  override func viewDidLoad() {
    super.viewDidLoad()
    self.view.addSubview(self.titleLabel)
    self.view.addSubview(self.tableView)
  }

}

Installation

  • Using CocoaPods:

    pod 'Then'
    
  • Using Swift Package Manager:

    import PackageDescription
    
    let package = Package(
      name: "MyAwesomeApp",
      dependencies: [
        .Package(url: "https://github.com/devxoul/Then", majorVersion: 2),
      ]
    )
    

License

Then is under MIT license. See the LICENSE file for more info.