RAC Examples

ReactiveCocoaExample.m

// Check form
RACSignal *formValidate = [RACSignal
                           combineLatest:@[self.textField.rac_textSignal]
                           reduce:^(NSString *email) {
                               NSRange at = [email rangeOfString:@"@"];
                               return @(at.location != NSNotFound);
                           }];

[[formValidate map:^id(NSNumber *isValid) {
    return isValid;
}]
 subscribeNext:^(NSNumber *isValid) {
     if ([isValid boolValue]) {
         self.textLabel.backgroundColor = [UIColor greenColor];
         self.textLabel.text = @"EMAIL VALIDO!";
     } else {
         self.textLabel.backgroundColor = [UIColor redColor];
         self.textLabel.text = @"EMAIL INVALIDO!";
     }
 }];