Split List into Sublists with LINQ

Question

Is there any way I can separate a List into several separate lists of SomeObject, using the item index as the delimiter of each s

Answer 1

I think the following suggestion would be the fastest. I am sacrificing the lazyness of the source Enumerable for the ability to use Array.Copy and knowing ahead of the time the length of each of my sublists.

public static IEnumerable Chunk(this IEnumerable items, int size)
{
    T[] array = items as T[] ?? items.ToArray();
    for (int i = 0; i < array.Length; i+=size)
    {
        T[] chunk = new T[Math.Min(size, array.Length - i)];
        Array.Copy(array, i, chunk, 0, chunk.Length);
        yield return chunk;
    }
}