acchou

let a = [1, 2, 3];
let [x, y, z] = a;    // x = 1; y = 2; z = 3;

acchou

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

import UIKit
import RxSwift
import RxCocoa

let ps = PublishSubject<Int>()

func pt() -> String {
    let thread = NSThread.currentThread()

acchou

import Foundation

public func delay(_ delay: TimeInterval, closure: @escaping ()->()) {
    DispatchQueue.main.asyncAfter(deadline: .now() + delay) {
        closure()
    }
}

#if NOT_IN_PLAYGROUND

acchou

import Foundation

extension String {
    // Return a String prefix with UTF8 representation limited to at most maxBytes. If maxBytes is negative, return the original string.
    public func prefixUTF8(maxBytes: Int) -> String {
        if maxBytes < 0 {
            return self
        }
        // Select the prefix of the string, leaving behind the remaining bytes.
        var prefix = self.utf8.prefix(maxBytes)