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What is __NSArrayI and __NSArrayM?
__NSArrayI(or M) cause “unrecognized selector” error.
How to convert to NSArray?
I did test to parse json, twitter api.
http://api.twitter.com/1/followers/ids.json?cursor=-1&screen_name=twitterapi
==> works fine. parsed object is NSCFDictionary class.
(This dictionary contains __NSArrayM class)
http://api.twitter.com/1/statuses/user_timeline.json?&screen_name=twitterapi
==> error. parsed object is __NSArrayM class.
__NSArrayIis a code-word for an immutable array – that is, a “regular”NSArraywhich you cannot change.__NSArrayMis a code-word for a mutable array – that is,NSMutableArray. InNSMutableArray, you can add and remove items.