Classes
- Enumerable static Provides a set of static (Shared in Visual Basic) methods for querying objects that implement IEnumerable`1.
- Grouping`2
- Lookup`2 Represents a collection of keys each mapped to one or more values.
Interfaces
- IGrouping`2 Represents a collection of objects that have a common key.
- ILookup`2 Defines an indexer, size property, and Boolean search method for data structures that map keys to IEnumerable`1 sequences of values.
-
IOrdered
Enumerable`1 Represents a sorted sequence.