facebook - FQL and Graph API in iOS -

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have used fql of graph api in ios? trying users posts different groups have read fql documentation need see example me proceed? please help

here example:

    nsmutabledictionary * params = [nsmutabledictionary dictionarywithobjectsandkeys:                                 @"select uid,name user uid=4", @"query",                                 nil]; [facebook   requestwithmethodname: @"fql.query"                          andparams: params                      andhttpmethod: @"post"                        anddelegate: self];

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