Dependency injector made in pure Swift

What's New



update swift 5


Swift Version Build Status CocoaPods Compatible Carthage Compatible Swift Package Manager Compatible Platform Twitter

Dependency injector Swift. Compatible for swift server-side and swift for iOS



To install DependencyInjector with CocoaPods, add the following lines to your Podfile.

source ''
platform :ios, '9.0'

pod 'DependencyInjector'


Carthage is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks.

You can install Carthage with Homebrew using the following command:

$ brew update
$ brew install carthage

To integrate DependencyInjector into your Xcode project using Carthage, specify it in your Cartfile:

github 'Digipolitan/dependency-injector' ~> 2.0

Run carthage update to build the framework and drag the built DependencyInjector.framework into your Xcode project.

Swift Package Manager

The Swift Package Manager is a tool for automating the distribution of Swift code and is integrated into the swift compiler.

Once you have your Swift package set up, adding DependencyInjector as a dependency is as easy as adding it to the dependencies value of your Package.swift.

dependencies: [
    .package(url: "", from: "2.0.0")

The Basics

First you must create a Module and register some providers

let module = Module()

IAnimal is a protocol that MUST be implemented by the Dog class

public protocol IAnimal {

    var name: String { get }

    func scream() -> String

open class Dog: IAnimal, Injectable {

    public var name: String

    public required convenience init(injector: Injector, arguments: [String : Any]?) throws {
        self.init(name: arguments?["name"] as? String ?? "Athina")

    init(name: String) { = name

    public func scream() -> String {
        return "Barking"

After that, you must register your module inside an injector

Injector.default.register(module: module)

Finally, inject an IAnimal and retrieve a concrete class registered inside your module

if let animal = try? Injector.default.inject(IAnimal.self) {
  print( // print Athina
  print(animal.scream()) // print Barking



Register a provider that handle arguments :

let module = Module()
module.bind(IAnimal.self).with { (_, arguments) -> IAnimal? in
  if let name = arguments?["name"] as? String {
    return Dog(name: name)
  return nil
Injector.default.register(module: module)

Inject an IAnimal with arguments Dictionary<String, Any> :

if let animal = Injector.default.inject(IAnimal.self, arguments: ["name": "Athina"]) {
  print( // print Athina
  print(animal.scream()) // print Barking
if let otherAnimal = Injector.default.inject(IAnimal.self, arguments: ["name": "Yoda"]) {
  print( // print Yoda
  print(otherAnimal.scream()) // print Barking


See for more details!

This project adheres to the Contributor Covenant Code of Conduct. By participating, you are expected to uphold this code. Please report unacceptable behavior to


DependencyInjector is licensed under the BSD 3-Clause license.


  • Swift Tools 5.0.0
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Last updated: Tue Mar 19 2024 03:55:50 GMT-0900 (Hawaii-Aleutian Daylight Time)