开发中ReactiveCocoa(RAC)常见用法
RAC监听按钮点击事件
[[self.button rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x) {
NSLog(@"RAC检测按钮点击");
}];
//或者:
self.button.rac_command = [[RACCommand alloc] initWithSignalBlock:^RACSignal *(id input) {
NSLog