Break an array of any type in smaller arrays

breakarray.swift

/**
   Break the provided array to smaller arrays based on the specified maximum
   number of items on each.

   - Parameter array: The original array to break in pieces.
   - Parameter maxItems: The maximum number of elements that each subarray should contain.
   - Parameter datatype: The datatype of the contained data in the original
   array.

   - Returns: A two-dimensional array that contains the subarrays as elements.

   */
  private func breakArray<T>(_ array: [T], inSubArraysOf maxItems: Int, datatype: T.Type) -> [[T]] {
      var resultArray = [[T]]()
      var temp = [T]()
      for (index, item) in array.enumerated() {
          temp.append(item)

          if (index + 1).isMultiple(of: maxItems) {
              resultArray.append(temp)
              temp.removeAll()
          }
      }

      resultArray.append(temp)
      temp.removeAll()

      return resultArray
  }