hiroshi-maybe

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

import UIKit

// https://www.facebook.com/video.php?v=10152735777427200&set=vb.9445547199&type=2&theater
var str = "Hello, playground"

func getNearbyChars(ch: String) -> Set<String> {
    switch ch {
    case "g": return Set(["g","h","f"])

hiroshi-maybe

//
//  LazyStreamTests.swift
//  Playground
//
//  Created by kori on 4/20/16.
//  Copyright © 2016 hiroshi.kori. All rights reserved.
//

import Foundation

hiroshi-maybe

-- Beautiful fibonacci implementation
fibs = 0 : 1 : zipWith (+) fibs (tail fibs)

hiroshi-maybe

//
//  TCOTests.swift
//  Playground
//
//  Created by kori on 4/20/16.
//  Copyright © 2016 hiroshi.kori. All rights reserved.
//

import XCTest

hiroshi-maybe

protocol MyProtocol: class {
  typealias MyAlias
  var something: MyAlias { get }
}

extension MyProtocol where MyAlias: YourProtocol {
  func bar() {
    // !!! Compile Error happens !!!
    // expected an argument list of type '(Self.AliasTypeAlias)'
    // self.something.foo { _ in print("X") }

hiroshi-maybe

class Tag {
  let tagName: NSString
  let element: NSString
  
  init(tagName: NSString, element: NSString) {
    self.tagName = tagName
    self.element = element
  }
  
  static let open: NSString = "<"

hiroshi-maybe

// 1. same name of functions with different signature in both protocol and protocol extension
// 2. someone is conforming to the protocol
// This should be compile error though, error does not happen. Instead Compiler crashes in AST -> SIL conversion phase.
protocol FooProtocol {
  func sameName(differentSignature: Bool) -> UITableViewCell?
}

extension FooProtocol {
  func sameName() -> UITableViewCell {
    return UITableViewCell()

hiroshi-maybe

import Foundation

// Light-weight utility of observable stream
// https://gist.github.com/staltz/868e7e9bc2a7b8c1f754
class Observer<T> {
  typealias EventHandler = T -> ()
  let eventHandler: EventHandler
  init(eventHandler: EventHandler) {
    self.eventHandler = eventHandler
  }

hiroshi-maybe

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

import UIKit

var str = "Hello, playground"

/*

class (Eq a, Show a) => Num a where
(+) :: a -> a -> a

hiroshi-maybe

import XCTest
//@testable import Playground

class StructVsClassTests: XCTestCase {
    let times = 1000000
    
    // 0.023 sec
    // 0.002 sec on Release build
    func testPerformanceStructConstructor() {
        // This is an example of a performance test case.