ReactiveCocoa Splitting Example

gistfile1.m

RACSignal *dateComponentsSignal = [[[RACSignal interval:1] startWith:[NSDate date]] map:^id(NSDate *value) {
    NSDateComponents *dateComponents = [[NSCalendar currentCalendar] components:NSMinuteCalendarUnit | NSSecondCalendarUnit fromDate:value];
    return dateComponents;
}];

RAC(self.minuteTextField.text) = [dateComponentsSignal map:^id(NSDateComponents *dateComponents) {
    return [NSString stringWithFormat:@"%d", dateComponents.minute];
}];

RAC(self.secondTextField.text) = [dateComponentsSignal map:^id(NSDateComponents *dateComponents) {
    return [NSString stringWithFormat:@"%d", dateComponents.second];
}];