Extension methods for enumerables

EnumerableExtensions

    public static class EnumerableExtensions
    {
        public static IEnumerable<T> ToEnumerable<T>(this T item, bool nullAsEmpty = true)
        {
            if (EqualityComparer<T>.Default.Equals(item, default(T)) && nullAsEmpty)
                yield break;
            yield return item;
        }

        public static bool None<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> predicate)
        {
            return !source.Any(predicate);
        }
    }