ios - Cant get array PFQuery objects from parse code block -

i dont know deal parse reason wont allow me save retrieved array mutable array created. works inside parse code block once outside, displays null. please?

 pfquery *query = [pfquery querywithclassname:@"comments"];     [query wherekey:@"flirtid" equalto:recipe.flirtid];     [query findobjectsinbackgroundwithblock:^(nsarray *objects, nserror *error) {         if (!error) {               comments = [[nsmutablearray alloc]initwitharray:objects];              // found objects             (pfobject *object in objects) {              }         } else {             // log details of failure             nslog(@"error: %@ %@", error, [error userinfo]);         }     }];     nslog(@"%@",[comments objectatindex:0]); 

it's working should. should read on how blocks work.

edit: try reading apple's documentation

you're nslogging 'comments' before comments gets set. how work? see, query running in background, , take bit of time. it's running asynchronously. code outside block run immediately.

while code comes before, because it's asynchronous block, can , run whenever.

try this:

comments = [[nsmutablearray alloc]initwitharray:objects]; nslog(@"%@",[comments objectatindex:0]); 

the important question is, want after query? looks want save comments, what? determine next.