CollectionExtension public sealed class CollectionExtension Documentation public static bool In<T>(T source, T[] collection) public static IEnumerable<Y> MapOver<T, Y>(Func<T, Y> operation, IEnumerable<T> collection) public static IEnumerable<T> OrderByProperty<T>(IEnumerable<T> list, string sortExpression) public static IEnumerable<T> TogetherWith<T>(T singleItem, T[] theRest)