ios - Swift 闭包中“弱自我”的 Objective-C 等价物是什么？

Question

你能告诉我相当于：

var didTapURL: ((_ url: URL) -> Void)?

..........

myObject.didTapURL = { [weak self] (url) in
     self?.manageUrl(url)
}

在Objectice-C中？

标签： iosobjective-cswiftclosuresweak

Answer 1

是的__weak，见下文

__weak __typeof(self) weakSelf = self;

// ...

    dispatch_async(dispatch_get_main_queue(), ^{
      [weakSelf call_some_selector];
    });