Cook classes/structs with the taste you love.
Naming your extensions in the Swifty way people love.
extension of Swift is powerful. We can extend not only our own class/struct, but also any frameworks' class/struct.
Well, function naming conflict is a common issue in extension. People were using xxx_ prefix to deal with that. Now people are using a smarter, cleaner and finally Swifter approach.
| Framework | Was | Now |
|---|---|---|
| RxSwift | label.rx_text |
label.rx.text |
| SnapKit | view.snp_makeConstraints |
view.snp.makeConstraints |
Cooking is the library help you adopt this Swifty way to name extension.
Either class or struct has to conform to Edible protocol to have the wrapper with .cook.
Then extend Cooking with where constraint to extend your class or struct. You will have to use ingredient to refer the instance instead of using self.
For class, the constraint can use either == or :.
For struct, the constraint has to use ==.
import Cooking
extension String: Edible {}
// Use `==` for structs.
extension Cooking where Ingredient == String {
static func bitterOne() -> String {
return "ðŸ˜ðŸ˜ðŸ˜"
}
func sweeten() -> String {
return ingredient.replacingOccurrences(of: "ðŸ˜", with: "😋")
}
}
let bitterString = String.cook.bitterOne()
// bitterString = "ðŸ˜ðŸ˜ðŸ˜"
let sweetString = bitterString.cook.sweeten()
// sweetString = "😋😋😋"
extension UIView: Edible {}
extension Cooking where Ingredient: UIView {
func area() -> CGFloat {
return ingredient.frame.width * ingredient.frame.height
}
}
let view = UIView(frame: .init(origin: .zero, size: .init(width: 50, height: 20)))
let area = view.cook.area()
// area = 1000CocoaPods is a dependency manager for Cocoa projects. You can install it with the following command:
$ gem install cocoapodsTo use Cooking in your Xcode project using CocoaPods, specify it in your Podfile:
pod 'Cooking'Then, run the following command:
$ pod installAdd this project as a dependency in your Package.swift file.
.Package(url: "https://github.com/ShaneQi/Cooking.git", majorVersion: 1, minor: 0)Include file Sources/Cooking.swift in your project.
- Can't extension structs with
mutating func.
extension String: Edible {}
extension Cooking where Ingredient == String {
mutating func addExclamation() {
ingredient.append("!")
}
}
"hello".cook.addExclamation()
// ERROR: ^ Cannot use mutating member, `cook` is a get-only property.- Can't extension generics types.
extension Optional: Edible {}
extension Cooking where Ingredient == Optional {
// ERROR: ^ Reference to generic type 'Optional' requires arguments in <...>
func someFunction() {}
}Apache-2.0