{{{
var leftNegativeSpacer: UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)
leftNegativeSpacer.width = -16.0
self.navigationItem.leftBarButtonItems = [leftNegativeSpacer, leftBarButton]

var rightNegativeSpacer: UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)
rightNegativeSpacer.width = -6.0
self.navigationItem.rightBarButtonItems = [rightNegativeSpacer, rightBarButton]
}}}

Swiftの場合：
{{{
var audioSession: AVAudioSession = AVAudioSession.sharedInstance()
audioSession.setCategory(AVAudioSessionCategoryPlayAndRecord, error: nil)
audioSession.setActive(true, error: nil)
}}}

Objective-Cの場合：
{{{
AVAudioSession* session = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:&error];
[audioSession setActive:YES error:nil];
}}}

>>>import AVFoundation

{{{
enum ProductCategory : String {
case Washers = "washers", Dryers = "dryers", Toasters = "toasters"

static let allValues = [Washers, Dryers, Toasters]
}

for category in ProductCategory.allValues{
//Do something
}
}}}

// Add extension
{{{
extension UILabel {
func setSizeFont (sizeFont: CGFloat) {
self.font = UIFont(name: self.font.fontName, size: sizeFont)!
self.sizeToFit()
}
}
}}}
// Use
{{{
myLabel.setSizeFont(20)
}}}

{{{
extension String {

//readonly computed property
var length: Int
{
return countElements(self)
}
}
}}}

A bridging header with 「#import <CommonCrypto/CommonCrypto.h> 」が必要です。
{{{
extension String {
var md5: String! {
let str = self.cStringUsingEncoding(NSUTF8StringEncoding)
let strLen = CC_LONG(self.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))
let digestLen = Int(CC_MD5_DIGEST_LENGTH)
let result = UnsafeMutablePointer<CUnsignedChar>.alloc(digestLen)

CC_MD5(str!, strLen, result)

var hash = NSMutableString()
for i in 0..<digestLen {
hash.appendFormat("%02x", result[i])
}

result.dealloc(digestLen)

return String(format: hash)
}
}
}}}

または、
{{{
extension Int {
func hexString() -> String {
return NSString(format:"%02x", self)
}
}

extension NSData {
func hexString() -> String {
var string = String()
for i in UnsafeBufferPointer<UInt8>(start: UnsafeMutablePointer<UInt8>(bytes), count: length) {
string += Int(i).hexString()
}
return string
}

func MD5() -> NSData {
let result = NSMutableData(length: Int(CC_MD5_DIGEST_LENGTH))!
CC_MD5(bytes, CC_LONG(length), UnsafeMutablePointer<UInt8>(result.mutableBytes))
return NSData(data: result)
}

func SHA1() -> NSData {
let result = NSMutableData(length: Int(CC_SHA1_DIGEST_LENGTH))!
CC_SHA1(bytes, CC_LONG(length), UnsafeMutablePointer<UInt8>(result.mutableBytes))
return NSData(data: result)
}
}

extension String {
func MD5() -> String {
return (self as NSString).dataUsingEncoding(NSUTF8StringEncoding)!.MD5().hexString()
}

func SHA1() -> String {
return (self as NSString).dataUsingEncoding(NSUTF8StringEncoding)!.SHA1().hexString()
}
}
}}}

{{{
if( count(self.textView.text.utf16) == 0 ){...
}}}

{{{

try:

var setText:String {
get {
return self.text
}
set {
self.text = newValue
}
}

}}}

FlappyBirdサンプルのソースは下記となります。

https://github.com/gscalzo/FlappySwift

AppDelegate.swiftなどもあり、ファイル数は5つくらいのSwiftファイルとなっています。全体の動きをつかむのも難しくなさそうです。

コードをいくら見ていても実際に自分が作りたいものとは厚くて高い壁があるものです。実際に動くソースを見て、そこから学んでいくのはいかがでしょう。

FlappySwiftはiOS用、MIT Licenseのオープンソース・ソフトウェアです。

GameScene.swift 一部抜粋
{{{
//
// GameScene.swift
// FlappyBird
//
// Created by Nate Murray on 6/2/14.
// Copyright (c) 2014 Fullstack.io. All rights reserved.
//

import SpriteKit

class GameScene: SKScene {
var bird = SKSpriteNode()
var skyColor = SKColor()
var verticalPipeGap = 150.0
var pipeTextureUp = SKTexture()
var pipeTextureDown = SKTexture()
var movePipesAndRemove = SKAction()

override func didMoveToView(view: SKView) {
// setup physics
self.physicsWorld.gravity = CGVectorMake( 0.0, -5.0 )

// setup background color
skyColor = SKColor(red: 81.0/255.0, green: 192.0/255.0, blue: 201.0/255.0, alpha: 1.0)
self.backgroundColor = skyColor

// ground
var groundTexture = SKTexture(imageNamed: "land")
groundTexture.filteringMode = SKTextureFilteringMode.Nearest

var moveGroundSprite = SKAction.moveByX(-groundTexture.size().width * 2.0, y: 0, duration: NSTimeInterval(0.02 * groundTexture.size().width * 2.0))
var resetGroundSprite = SKAction.moveByX(groundTexture.size().width * 2.0, y: 0, duration: 0.0)
var moveGroundSpritesForever = SKAction.repeatActionForever(SKAction.sequence([moveGroundSprite,resetGroundSprite]))

for var i:CGFloat = 0; i < 2.0 + self.frame.size.width / ( groundTexture.size().width * 2.0 ); ++i {
var sprite = SKSpriteNode(texture: groundTexture)
sprite.setScale(2.0)
sprite.position = CGPointMake(i * sprite.size.width, sprite.size.height / 2.0)
sprite.runAction(moveGroundSpritesForever)
self.addChild(sprite)
}

// skyline
var skyTexture = SKTexture(imageNamed: "sky")
skyTexture.filteringMode = SKTextureFilteringMode.Nearest

var moveSkySprite = SKAction.moveByX(-skyTexture.size().width * 2.0, y: 0, duration: NSTimeInterval(0.1 * skyTexture.size().width * 2.0))
var resetSkySprite = SKAction.moveByX(skyTexture.size().width * 2.0, y: 0, duration: 0.0)
var moveSkySpritesForever = SKAction.repeatActionForever(SKAction.sequence([moveSkySprite,resetSkySprite]))

for var i:CGFloat = 0; i < 2.0 + self.frame.size.width / ( skyTexture.size().width * 2.0 ); ++i {
var sprite = SKSpriteNode(texture: skyTexture)
sprite.setScale(2.0)
sprite.zPosition = -20;
sprite.position = CGPointMake(i * sprite.size.width, sprite.size.height / 2.0 + groundTexture.size().height * 2.0)
sprite.runAction(moveSkySpritesForever)
self.addChild(sprite)
}

・・・
}}}

「cell.text」はiOS8以降、使えなくなぅったので、「cell.textLabel.text」を使ってください。

{{{
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

// Cellの.を取得する.
let cell = tableView.dequeueReusableCellWithIdentifier("MyCell", forIndexPath: indexPath) as UITableViewCell

// Cellに値を設定する.
cell.textLabel?.text = "\(myItems[indexPath.row])"

return cell
}
}}}