dani-mp

// So we have a context...

const Context = React.createContext();

class Provider extends React.Component {
  addTodo = todo => this.setState(({ todos }) => ({ todos: [...todos, todo] }));
  
  state = {
    todos: [],
    addTodo: this.addTodo

dani-mp

import UIKit
import PlaygroundSupport

import ReSwift

// API

protocol API {
    func loadUsers(completion: @escaping (([User]) -> Void))
}

dani-mp

// Note you can copy this code andn paste it in a Xcode Playground

// Simulates working and introduces some randomness
func randomSleep() {
    sleep(arc4random_uniform(2))
}

// Item to be produced/consumed
struct Item {
    let id: Int

dani-mp

func arrayToTuple(array: [Int]) -> (Int, Int, Int) {
    return array.reduce((0, 0, 0)) { temp, item in
        switch item {
        case 0..<10: return (temp.0 + 1, temp.1, temp.2)
        case 10..<100: return (temp.0, temp.1 + 1, temp.2)
        default:
            return item > 100 ? (temp.0, temp.1, temp.2 + 1) : temp
        }
    }
}

dani-mp

1. Comment out @UIApplicationMain in your AppDelegate.

2. Create main.swift file with the following code:

import Foundation
import UIKit

let isRunningTests = NSClassFromString("XCTestCase") != nil

if isRunningTests {