Create batches in linq

Question

Can someone suggest a way to create batches of a certain size in linq?

Ideally I want to be able to perform operations in chunks of some configurable amount.

Answer 1

Same approach as MoreLINQ, but using List instead of Array. I haven't done benchmarking, but readability matters more to some people:

    public static IEnumerable> Batch(this IEnumerable source, int size)
    {
        List batch = new List();

        foreach (var item in source)
        {
            batch.Add(item);

            if (batch.Count >= size)
            {
                yield return batch;
                batch.Clear();
            }
        }

        if (batch.Count > 0)
        {
            yield return batch;
        }
    }