chiiph

func b() {
    for i := 0; i < 4; i++ {
        defer fmt.Print(i)
    }
}

chiiph

__block int variable = 1;
int anotherVariable = 2;
void (block^)() = ^{
  variable++; // actually modifying variable
  anotherVariable++; // modifying a copy
}

chiiph

std::shared_ptr<GameObject> gameObject { std::make_shared<GameObject>("Bomb") };
cocos2d::CCLabelTTF *myLabel = cocos2d::CCLabelTTF::create("Explode!", "Arial", 30.0f);

auto myLambda = [gameObject]()
                {
                  if (gameObject.use_count() > 1)
                  {
                    gameObject->explode();
                  }
                });

chiiph

int nonModifiable = 42;
int modifiable = 23;
auto myLambda = [=, &modifiable]() mutable { modifiable++; nonModifiable++; };
myLambda(); // modifiable == 24, nonModifiable == 42