You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

125 lines
2.5 KiB

2 years ago
# 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("devxoul@gmail.com", 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.