ReactiveCocoa操作方法-线程\时间

- (void)timeout
{
    RACSignal *signal = [[RACSignal createSignal:^RACDisposable *(id<RACSubscriber> subscriber) {
        return nil;
    }] timeout:1 onScheduler:[RACScheduler currentScheduler]];
    [signal subscribeNext:^(id x) {
        NSLog(@"%@", x);
    } error:^(NSError *error) {
        //1秒后会自动调用
        NSLog(@"error = %@", error);
    }];
    /*结果:error = Error Domain=RACSignalErrorDomain Code=1 "(null)"*/
}

- (void)interval
{
    [[RACSignal interval:1 onScheduler:[RACScheduler currentScheduler]] subscribeNext:^(id x) {
        NSLog(@"%@", x);
    }];
}

- (void)delay
{
    [[[RACSignal createSignal:^RACDisposable *(id<RACSubscriber> subscriber) {
        [subscriber sendNext:@1];
        return nil;
    }] delay:2] subscribeNext:^(id x) {
        NSLog(@"%@", x);
    }];
}