How to split a list into ‘chunks’ (Fun Code)

gistfile1.cs

void Main()
{
  var items = new List<string>{ "A", "B", "C", "D", "E", "F", "G", "H", "I" };
	
  items.Chunk(2).Dump();
}

public static class Ext
{
  public static IEnumerable<IEnumerable<T>> Chunk<T>(this IEnumerable<T> source, int chunkSize)
  {
    using(var enumerator = source.GetEnumerator()) while(enumerator.MoveNext()) yield return Take(enumerator, chunkSize);
  }
	
  private static IEnumerable<T> Take<T>(IEnumerator<T> enumerator, int n)
  {
    do yield return enumerator.Current; while(--n > 0 && enumerator.MoveNext());
  }
}