iphone - How to get a UITableView's visible sections? -

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uitableview provides methods indexpathsforvisiblerows , visiblecells, how can visible sections?

or easy way take advantage of valueforkeypath , nsset class:

nsset *visiblesections = [nsset setwitharray:[[self.tableview indexpathsforvisiblerows] valueforkey:@"section"]];

basically array of section values in visible rows , populate set remove duplicates.


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