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bobspryn/basicSubscribe.m

Last active August 29, 2015 14:08
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basicSubscribe.m
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basicSubscribe.m
- (void) viewDidLoad {
// ...
// create and get a reference to the signal
RACSignal *usernameValidSignal = RACObserve(self.viewModel, isUsernameValid);
// update the local property when this value changes
[usernameValidSignal subscribeNext:^(NSNumber *isValidNumber) {
self.usernameIsValid = isValidNumber.boolValue
}];
}
@yulingtianxia
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I think you forget the "subscribeNext":

- (void) viewDidLoad {
  // ...
  // create and get a reference to the signal
  RACSignal *usernameValidSignal = RACObserve(self.viewModel, isUsernameValid);
  // update the local property when this value changes
  [usernameValidSignal subscribeNext:^(NSNumber *isValidNumber) {
          self.usernameIsValid = isValidNumber.boolValue
      }];
}

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