class MyClass : public cocos2d::Layer{
//create() メソッド作成
CREATE_FUNC(MyClass);

//init()作成
bool init() override{
cocos2d::Layer::init(); //親クラスのinitを呼び出す。忘れずに！
//自前の初期化処理
//
}

//その他の定義
//
};

//生成
auto obj = MyClass::create(); //参照カウンタが1になる

//破棄
obj->release(); //参照カウンタを1減らす。0になるので後で自動的に破棄される。
obj = nullptr; //これはC++の作法通りしておいたほうがよい

#define CREATE_FUNC(__TYPE__) \
static __TYPE__* create() \
{ \
__TYPE__ *pRet = new __TYPE__(); \
if (pRet && pRet->init()) \
{ \
    pRet->autorelease(); \
    return pRet; \
} \
else \
{ \
    delete pRet; \
    pRet = NULL; \
    return NULL; \
} \
}

Ref 参照カウンタを持つ
   +-- Node　　　親子関係を持つ
       +-- Scene　　Nodeとほぼ同じ。違いはアンカーポイントのデフォルト位置が画面中心になっていることだけ(Nodeは左下がデフォルト位置)
       +-- Layer　　　タッチイベントを扱う
           +-- LayerColor 背景に色を塗れる
               +-- LayerGradient 背景にグラデーションできる
       +-- ScrollView　　スクロールビュー
           +-- TableView　　　テーブルビュー
       +-- Sprite　　　スプライトを表示する
       +-- SpriteBatchNode　　スプライトをまとめて表示するためのクラス（別記事に書く）
           +-- Label　　文字列表示用クラス。zyngaが作った？らしい
       +-- LabelTTF　　コンフィグ設定付きのラベル

Ref* Ref::autorelease()
{
   PoolManager::getInstance()->getCurrentPool()->addObject(this);
   return this;
}

void DisplayLinkDirector::mainLoop()
{
   if (_purgeDirectorInNextLoop)
   {
       _purgeDirectorInNextLoop = false;
       purgeDirector();
   }
   else if (! _invalid)
   {
       drawScene();
    
       // release the objects
       PoolManager::getInstance()->getCurrentPool()->clear();
   }
}

void AutoreleasePool::clear()
{
#if defined(COCOS2D_DEBUG) && (COCOS2D_DEBUG > 0)
   _isClearing = true;
#endif
   for (const auto &obj : _managedObjectArray)
   {
       obj->release();
   }
   _managedObjectArray.clear();
#if defined(COCOS2D_DEBUG) && (COCOS2D_DEBUG > 0)
   _isClearing = false;
#endif
}

void Ref::release()
{
   CCASSERT(_referenceCount > 0, "reference count should greater than 0");
   --_referenceCount;

   if (_referenceCount == 0)
   {
#if defined(COCOS2D_DEBUG) && (COCOS2D_DEBUG > 0)
       auto poolManager = PoolManager::getInstance();
       if (!poolManager->getCurrentPool()->isClearing() && poolManager->isObjectInPools(this))
       {
           // Trigger an assert if the reference count is 0 but the Ref is still in autorelease pool.
           // This happens when 'autorelease/release' were not used in pairs with 'new/retain'.
           //
           // Wrong usage (1):
           //
           // auto obj = Node::create();   // Ref = 1, but it's an autorelease Ref which means it was in the autorelease pool.
           // obj->autorelease();   // Wrong: If you wish to invoke autorelease several times, you should retain `obj` first.
           //
           // Wrong usage (2):
           //
           // auto obj = Node::create();
           // obj->release();   // Wrong: obj is an autorelease Ref, it will be released when clearing current pool.
           //
           // Correct usage (1):
           //
           // auto obj = Node::create();
           //                     |-   new Node();     // `new` is the pair of the `autorelease` of next line
           //                     |-   autorelease();  // The pair of `new Node`.
           //
           // obj->retain();
           // obj->autorelease();  // This `autorelease` is the pair of `retain` of previous line.
           //
           // Correct usage (2):
           //
           // auto obj = Node::create();
           // obj->retain();
           // obj->release();   // This `release` is the pair of `retain` of previous line.
           CCASSERT(false, "The reference shouldn't be 0 because it is still in autorelease pool.");
       }
#endif

#if CC_USE_MEM_LEAK_DETECTION
       untrackRef(this);
#endif
       delete this;
   }
}

Node * Node::create()
{
   Node * ret = new Node();
   if (ret && ret->init())
   {
       ret->autorelease();
   }
   else
   {
       CC_SAFE_DELETE(ret);
   }
   return ret;
}

 parentNode->addChild(childNode); //childNodeの参照カウンタが1増える

   standSprite = Sprite::create("stand.png");

   Animation* walkAnimation;
   walkAnimation = Animation::create();
   walkAnimation->addSpriteFrame(cache->getSpriteFrameByName("walk_1.png"));
   walkAnimation->addSpriteFrame(cache->getSpriteFrameByName("walk_2.png"));
   walkAnimation->setDelayPerUnit(0.5f);
   walkAnimation->setRestoreOriginalFrame(true); //(A)

   Animate* animate = Animate::create(walkAnimation);
   standSprite->runAction(RepeatForever::create(animate));

dyld: could not load inserted library '/usr/lib/libgmalloc.dylib' because image not found

 リスト 2-7 通知アクションを定義するコード例
 UIMutableUserNotificationAction *acceptAction =
[[UIMutableUserNotificationAction alloc] init];
 // Define an ID string to be passed back to your app when you handle the action
 acceptAction.identifier = @"ACCEPT_IDENTIFIER";
 // Localized string displayed in the action button
 acceptAction.title = @"Accept";
 // If you need to show UI, choose foreground
 acceptAction.activationMode = UIUserNotificationActivationModeBackground;
 // Destructive actions display in red
 acceptAction.destructive = NO;
 // Set whether the action requires the user to authenticate
 acceptAction.authenticationRequired = NO;

 // First create the category
 UIMutableUserNotificationCategory *inviteCategory = [[UIMutableUserNotificationCategory alloc] init];
 // Identifier to include in your push payload and local notification
 inviteCategory.identifier = @"INVITE_CATEGORY";
 // Add the actions to the category and set the action context
 [inviteCategory setActions:@[acceptAction, maybeAction, declineAction] forContext:UIUserNotificationActionContextDefault];
 // Set the actions to present in a minimal context
 [inviteCategory setActions:@[acceptAction, declineAction]
forContext:UIUserNotificationActionContextMinimal];

 NSSet *categories = [NSSet setWithObjects:inviteCategory, alarmCategory, ...
 UIUserNotificationSettings *settings =
[UIUserNotificationSettings settingsForTypes:types categories:categories];
 [[UIApplication sharedApplication] registerUserNotificationSettings:settings];

 UILocalNotification *notification = [[UILocalNotification alloc] init];
 ...
 notification.category = @"INVITE_CATEGORY";
 [[UIApplication sharedApplication] scheduleLocalNotification:notification];

NSDictionary viewsDictionary = NSDictionaryOfVariableBindings(view1, view2);
[self.view addConstraints: [NSLayoutConstraint constraintsWithVisualFormat:@"V:|[view1(==40)]-12-[view2]|" options:0 metrics:nil views:viewsDictionary]];

 @try{
     NSDictionary viewsDictionary = NSDictionaryOfVariableBindings(view1);
     [self.view addConstraints: [NSLayoutConstraint constraintsWithVisualFormat:@"V:[view1==%d)]" options:0 metrics:nil views:viewsDictionary]];
 }@catch(id exception) {
     NSLog(@"%@", [exception description]);
 }

Unable to parse constraint format: 
Expected a ']' here. That is how you give the end of a view. 
V:|[view1==123)]| 
      ^
こんな感じで出力される

   [self.view addConstraint:
       [NSLayoutConstraint constraintWithItem:self.view1 attribute:NSLayoutAttributeHeight
           relatedBy:NSLayoutRelationEqual
           toItem:nil attribute:0 
           multiplier:1.f constant:123]
   ];

   [self.view addConstraint:
       [NSLayoutConstraint constraintWithItem:self.view1 attribute:NSLayoutAttributeTop
           relatedBy:NSLayoutRelationGreaterThanOrEqual 
           toItem:self.view2 attribute:NSLayoutAttributeTop
           multiplier:1.f constant:25]
   ];

   [self.view addConstraint:
       [NSLayoutConstraint constraintWithItem:self.view1 attribute:NSLayoutAttributeWidth 
           relatedBy:NSLayoutRelationEqual 
           toItem:self.view2 attribute:NSLayoutAttributeHeight
           multiplier:2.f constant:10]
   ];

self.delegate = self;

	UIImage *originImage = [UIImage imageNamed:@"tab_bg.png"];
	CGSize tabItemSize = CGSizeMake([self rotatingFooterView].frame.size.width / self.tabBar.items.count, [self rotatingFooterView].frame.size.height);

	UIGraphicsBeginImageContext(tabItemSize);
	[originImage drawInRect:CGRectMake(0, 0, tabItemSize.width, tabItemSize.height)];
	UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
	UIGraphicsEndImageContext();

	[[UITabBar appearance] setSelectionIndicatorImage:resizedImage];