Swift 3.0: Value of type 'IndexSet' has no member 'enumerateIndexesUsingBlock'

Question

Receiving Value of type \'IndexSet\' has no member \'enumerateIndexesUsingBlock\' error at enumerateIndexesUsingBlock.

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Answer 1

The Foundation type NSIndexSet has a enumerateIndexesUsingBlock method. The corresponding overlay type IndexSet from Swift 3 is a collection, therefore you can just map each index to an IndexPath:

extension IndexSet {
    func bs_indexPathsForSection(_ section: Int) -> [IndexPath] {
        return self.map { IndexPath(item: $0, section: section) }
    }
}