This .NET Standard 2.0 library offers various collection extensions. These include automatic indexing by a key field of their elements, automatic "composite pattern", i.e. elements automatically aware of their "owner" who exclusively holds their collection, multivalued dictionaries, in read-only and read-write variants.
Element types that are indexed by a key field of type K must implicitly or explicitly implement IKeyedElement<K>. Element types that are aware of their owner of type P must implement IChild<P>. Element types that support both of the above should implement IKeyedChild<K, P>. The UML diagram of these interfaces follows:
The collection interfaces offered are shown on the next UML diagram. All interfaces have serializable concrete implementations with corresponding name. In the interface and class names, the 'Bag' is a simple collection with Count discoverable in O(1), 'Children' is an owner-aware collection having elements which are also owner-aware, 'Sequence' or 'Ordered' is an ordered collection, 'Map' or 'Keyed' is a indexing collection aware of element keys.
This library has no dependencies.