Extension Property

The utility interface for Associated Object. If you use this, you can attach any variables in extension.

Usage

protocol Animal {}

enum AnimalPropertyKeys: String, ExtensionPropertyKey {
    case name
}

final class Dog: Animal {}

extension Dog: ExtensionProperty {}

// Declare setter and getter to property
extension Animal where Self: ExtensionProperty {
    var name: String {
        get {
            return getProperty(key: AnimalPropertyKeys.name, defaultValue: "")
        }

        set {
            setProperty(key: AnimalPropertyKeys.name, newValue: newValue)
        }
    }
}

let dog = Dog()

// You can assign string to dog.name
dog.name = "Autumn"

Please check out and try the unit test.

Installation

Carthage

If you’re using Carthage, simply add ExtensionProperty to your Cartfile:

github "cats-oss/ExtensionProperty"

CocoaPods

ExtensionProperty is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'ExtensionProperty'

Swift Package Manager

If you’re using Swift Package Manager, simply add ExtensionProperty to your Package.swift:

dependencies: [
    .package(url: "https://github.com/cats-oss/ExtensionProperty", from: "1.0.2")
]

Requirements

• Xcode 9.3
• Swift 4.1 or greater

LICENSE

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