Break Larger Array up into slices

extension Array {
    func forEachSlice(sliceSize: Int, block: [Element] -> Void) {

        guard sliceSize > 0 && self.count > 0 else {
            return
        }

        var currentSlice = [Element]()

        defer {
            if !currentSlice.isEmpty {
                block(currentSlice)
            }
        }

        for element in self {
            currentSlice.append(element)

            if currentSlice.count >= sliceSize {
                block(currentSlice)
                currentSlice.removeAll(keepCapacity: true)
            }
        }
    }
}