https://github.com/devxoul/then

✨ Super sweet syntactic sugar for Swift initializers
https://github.com/devxoul/then

swift syntactic-sugar

Last synced: 4 days ago
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✨ Super sweet syntactic sugar for Swift initializers

• Host: GitHub
• URL: https://github.com/devxoul/then
• Owner: devxoul
• License: mit
• Created: 2015-12-24T08:29:37.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2024-03-15T01:42:13.000Z (9 months ago)
• Last Synced: 2024-12-18T16:14:28.311Z (4 days ago)
• Topics: swift, syntactic-sugar
• Language: Swift
• Homepage:
• Size: 89.8 KB
• Stars: 4,223
• Watchers: 52
• Forks: 292
• Open Issues: 13
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Then

![Swift](https://img.shields.io/badge/Swift-5.0-orange.svg)

[![CocoaPods](http://img.shields.io/cocoapods/v/Then.svg)](https://cocoapods.org/pods/Then)

[![Build Status](https://travis-ci.org/devxoul/Then.svg?branch=master)](https://travis-ci.org/devxoul/Then)

✨ Super sweet syntactic sugar for Swift initializers.

## At a Glance

Initialize UILabel **then** set its properties.

```swift

let label = UILabel().then {

  $0.textAlignment = .center

  $0.textColor = .black

  $0.text = "Hello, World!"

}

```

This is equivalent to:

```swift

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("[email protected]", forKey: "email")

      $0.synchronize()

    }

    ```

## Real World Example

Here's an example usage in an UIViewController subclass.

```swift

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](https://cocoapods.org)**:

    ```ruby

    pod 'Then'

    ```

- **Using [Swift Package Manager](https://swift.org/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](LICENSE) file for more info.