devxoul/Then

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.

``swift let queue = OperationQueue().then { $0.maxConcurrentOperationCount = 1 } ``

• Want to use with your own types? Just make extensions.

```swift extension MyType: Then {}

let instance = MyType().then { $0.really = "awesome!" } ```

• Use with() when copying the value types.

``swift 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.

``swift 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:

``ruby pod 'Then' ``

• Using Swift Package Manager:

```swift 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.

Package Metadata

Repository: devxoul/Then

Stars: 4384

Forks: 299

Open issues: 16

Default branch: main

Primary language: swift

License: MIT

Topics: swift, syntactic-sugar

README: README.md