ios - How to join objects of __NSCFArray? -

ios - How to join objects of __NSCFArray? -

i fetching info yelp, ,

nslog(@"categories:%@", categories); nslog(@"categories: %@", [categories class]); nslog(@"categories: %@", [categories componentsjoinedbystring:@","]);

i see log

categories:( ( thai, thai ) ) 2014-06-19 16:20:47.338 yelp[28929:70b] categories class: __nscfarray 2014-06-19 16:20:47.341 yelp[28929:70b] categories:( ( thai, thai ) ) 2014-06-19 16:20:47.341 yelp[28929:70b] categories class: __nscfarray 2014-06-19 16:20:47.343 yelp[28929:70b] categories:( ( thai, thai ) ) 2014-06-19 16:20:47.343 yelp[28929:70b] categories class: __nscfarray

so componentsjoinedbystring not joining it.

as newbie, know how can bring together items of __nscfarray?

as per rmaddy's suggestion, observed incorrect.

this works me

nsstring *categoriesjoined = [(business[@"categories"][0]) componentsjoinedbystring:@","];

ios objective-c