fastStride method

Iterable<E> fastStride(int stepSize, [ int startIndex = 0 ])

Returns an Iterable<E> which iterates this using a custom stepSize and starting from startIndex.

• If startIndex is a valid index then the first element of the iterable will be: elementAt(startIndex).
• The parameter stepSize must not be zero.
• This method does not check for concurrent modification.
• Should be used with fixed length or immutable iterables.

Implementation

Iterable<E> fastStride(int stepSize, [int startIndex = 0]) {
  if (stepSize == 0) {
    _throwError<E>();
  }
  return stepSize > 0
      ? _FastStrideIterable<E>(this, stepSize, startIndex)
      : _ReverseFastStrideIterable(this, stepSize, startIndex);
}