LINQ Extensions Examples

        /// <summary>
        /// Replaces a null reference with an empty collection.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="source">The collection reference.</param>
        /// <returns>The collection or an empty one</returns>
        public static IEnumerable<T> NullToEmpty<T>(this IEnumerable<T> source)
        {
            return source ?? Enumerable.Empty<T>();
        }