NSMutablearray move object from index to index

Question

I have a UItableview with reordable rows and the data is in an NSarray. So how do I move an object in the NSMutablearray when the appropriate tableview delegate is called?

Answer 1

Similar to Tomasz but with out of range error handling

enum ArrayError: ErrorType {
    case OutOfRange
}

extension Array {
    mutating func move(fromIndex fromIndex: Int, toIndex: Int) throws {
        if toIndex >= count || toIndex < 0 {
            throw ArrayError.OutOfRange
        }
        insert(removeAtIndex(fromIndex), atIndex: toIndex)
    }
}