jon-cotton’s gists

jon-cotton / StateStore.swift

Last active June 23, 2016 16:46

Implementation of a Redux/Flux like store with a single AppState in Swift 3.0. Makes use of some of the concurrency techniques demonstrated in the WWDC 2016 talk 'Concurrent Programming With GCD in Swift 3' https://developer.apple.com/videos/play/wwdc2016/720/

	//: Swift 3 State Store

	import Foundation
	import XCPlayground
	XCPlaygroundPage.currentPage.needsIndefiniteExecution = true

	protocol State {
	var counter: Int { get }
	}

jon-cotton / try?.swift

Created June 17, 2016 10:55

	//: Playground - noun: a place where people can play

	import Foundation

	enum PersonError: ErrorProtocol {
	case doesNotExistInDataSource
	case emailNotInPersonalData
	}

	struct Person {

jon-cotton / video-helper.swift

Created June 2, 2016 17:43

	#!/usr/bin/swift

	import Foundation

	enum Device: String {
	case phone
	case tablet

	var videoSize: Int {
	switch self {

jon-cotton / Validation.swift

Last active May 31, 2016 09:30

Basic validation 'engine' for Swift, allows you to quickly test a group of UITextFields against either basic built in validation rules or custom regex patterns and get back a group of specfic errors as to what didn't match/validate. Copy and paste the raw contents into a Swift playground to try it out for yourself.

	//: Playground - noun: a place where people can play

	import UIKit

	protocol Validator {
	associatedtype T

	func isValid(value: T) throws -> Bool
	}

jon-cotton / printable-string-enums.swift

Last active May 12, 2016 07:59

Make all string based enums String convertible using the rawValue

	extension CustomStringConvertible where Self: RawRepresentible, Self.RawValue == String {
	var description: String {
	return rawValue
	}
	}

	extension CustomDebugStringConvertible where Self: RawRepresentible, Self.RawValue == String {
	var debugDescription: String {
	return "\(self)"
	}

jon-cotton / build-helper.swift

Last active July 5, 2016 11:38

	#!/usr/bin/swift

	import Foundation

	// MARK:- Functions

	func runShellCommand(cmd: String, env: [String : String]? = nil) -> (output: [String], error: [String], exitCode: Int32) {
	var output : [String] = []
	var error : [String] = []

jon-cotton / actionCreatingAction.swift

Last active April 25, 2016 10:16

	enum AlertsStatusUpdateAction: ActionCreatingAction {
	case requestUpdate(AlertsService)
	case updateFinishedWithAlerts([InAppAlert])
	case updateFinishedWithError(AlertsError)

	func execute(state: AppState) -> AppState {
	var mutableState = state

	switch self {
	case .requestUpdate(_):

jon-cotton / Reflux.swift

Created April 20, 2016 10:28

	import Foundation
	import XCPlayground

	/*:
	# Reflux
	*/
	//: Interfaces
	protocol State {
	init()
	var userState: UserState {get}

jon-cotton / Too Many Generics.swift

Created January 15, 2016 10:41

	//: Adventures in generics

	import Foundation

	protocol MyBaseProtocol {
	func didSomething()
	func didAnotherThing()
	}

	protocol MyDataProtocol : MyBaseProtocol {

jon-cotton / mappable2.swift

Last active December 22, 2015 23:21

	// Copy and Paste into a Swift playground

	import Foundation
	import XCPlayground
	XCPlaygroundPage.currentPage.needsIndefiniteExecution = true


	// Data Source (anything that implements subscripting for accessing data)
	//protocol MapDataProviding {
	// typealias Key: Hashable

Jon Cotton jon-cotton