ReactiveObjCObjective-C 的函数响应式编程框架
ReactiveObjC (前身是 ReactiveCocoa 或者 RAC) 是一个 Objective-C 框架,实现了函数响应式编程模式。
最简单的例子:
// When self.username changes, logs the new name to the console. // // RACObserve(self, username) creates a new RACSignal that sends the current // value of self.username, then the new value whenever it changes. // -subscribeNext: will execute the block whenever the signal sends a value. [RACObserve(self, username) subscribeNext:^(NSString *newName) { NSLog(@"%@", newName); }];
K/V 通知
// Only logs names that starts with "j". // // -filter returns a new RACSignal that only sends a new value when its block // returns YES. [[RACObserve(self, username) filter:^(NSString *newName) { return [newName hasPrefix:@"j"]; }] subscribeNext:^(NSString *newName) { NSLog(@"%@", newName); }];
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