ios - ReactiveCocoa- Error in map method -


i'm writing method gets signal webservice , converts nsdictionary object. if there's error happening in conversion?

will return racsignal error:error] then?

[signal map:^id(nsdictionary *dictionary) {     nserror *error;     samwebserviceresponse *samresponse = [mtljsonadapter modelofclass: samwebserviceresponse.class                                                    fromjsondictionary: dictionary                                                                 error: &error];     if (error) {         //todo: don't know if way go.         return [racsignal error:error];     } else {         return samresponse;     }   } ]

reactivecocoa has construct situation called trymap:. check out:

[signal trymap:^id(nsdictionary *dictionary, nserror **errorptr) {     return [mtljsonadapter modelofclass:samwebserviceresponse.class                      fromjsondictionary:dictionary                                   error:errorptr]; }]

this assumes modelofclass:fromjsondictionary:error: return nil when error occurs -- pretty standard -- it's worth checking docs on in case. code you've written return error signal, legitimate thing (signals of signals best part of rac), not want here.


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