Promise.swift

tl;dr

A very simple Swift 3.0 Promise library I've written while on the plane using my iPad and Playgrounds.

Writte in just 33 lines of code.

Usage

Rather simple and more for reference than actually to be used is this very simple implementation of a Promise framework.

Succeeding

Promise<String> { resolve, reject in 
	resolve("Bazingaaaa!")
}.then { result in 
	print(result) // Bazingaaaa!
}

Failing

Promise<String> { resolve, reject in 
	reject(Error.AnError)
}.fail { error in 
	print("An error occured \(error)")
}

Chaining

Promise<String> { resolve, reject in 
	resolve(1)
}.then { result -> Promise<Int> in 
	return Promise<Int> { resolve, reject in 
		resolve(result + 1)
	}
}.then { result -> Promise<Int> in 
	return Promise<Int> { resolve, reject in 
		resolve(result + 1)
	}
}.then { result in 
	print(result) // 3
}

Contributing

Please take a moment to read and understand the Berlin Code of Conduct.

License

See LICENSE.md