ios - What's a proper way to control access to property that stores server call results? -

my class has property gets populated network call. population can triggered action.

what's correct strategy implement access of property, given property can accessed when new result set being fetched server?

e.g.

@interface myclass @property (nonatomic, strong) nsdictionary *data; @end  @implement myclass  - (void)loaddata {    // self.data can accessed when loaddata called.   // what's correct strategy controlling access self.data?   [self loaddatafromserverwithcompletion:^(nsdictionary *objects) {     [self.data removeallobjects];     // populate self.data objects   }]; } 

what's correct strategy implement access of property, given property can accessed when new result set being fetched server?

the correct strategy? serialize access.

the easiest way mark property atomic, , self.data = objects; in completion handler.

your completion should this:

 dispatch_async(dispatch_get_main_queue(), ^{      ... tell app reload data ...  });