public static IEnumerable <IEnumerable <T> > InChunksOf <T>(this IEnumerable <T> enumerable, int chunkSize)
{
if (enumerable == null)
{
throw new ArgumentNullException(nameof(enumerable));
}
if (chunkSize < 1)
{
throw new ArgumentException(
"Chunk size must be a positive integer greater than zero",
nameof(chunkSize)
);
}
return(chunkSize == 1
? enumerable.Select(item => new[] { item })
: IEnumerableExtensions.InChunksOfImpl(enumerable, chunkSize));
}
