objective c - iPhone NSURLConnection initialization problem -

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what difference between 2 lines, in different apps first 1 seems work , have problems second one; , 1 should choose on another? app receive , send data webservice. 

nsurlconnection *theconnection = [[nsurlconnection alloc] initwithrequest:therequest delegate:self];  nsurlconnection *theconnection = [nsurlconnection connectionwithrequest:request delegate:self];

and should release connection object, after every didfinishloading? doesn't take time on every request connect?

the first 1 instance of nsurlconnection take ownership of object, have responsibility , hence must release it. details on ownership reference.

the second 1 auto-released object dont need release it. released automatically when auto-release pool drained.


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