Delphi multiple indexed generic list

Question

I am looking for a TList descendent which lets me add one or more indexes and lets me search and view by these indexes.

A 30min google search session has left me with nothing.

This must have been needed before. I mean how many times have you had a in memory indexed collection and then needed to display it in a different order?

Thanks,

AJ

Answer 1

Have you considered TClientDataSet? It can be sorted and filtered at runtime. An article can be found at http://edn.embarcadero.com/article/29056

Answer 2

If you are looking for a generic implementation of a Multimap in Delphi, LU RD has pointed to you the right direction in his comment above on delphi-coll.

The namespace Collections.MultiMaps provides a bunch of classes:

• TDistinctMultiMap: The generic multi-map collection.
• TDoubleSortedDistinctMultiMap: The generic multi-map collection.
• TDoubleSortedMultiMap: The generic multi-map collection.
• TMultiMap: The generic multi-map collection.
• TObjectDistinctMultiMap: The generic multi-map collection designed to store objects.
• TObjectDoubleSortedDistinctMultiMap: The generic multi-map collection designed to store objects.
• TObjectDoubleSortedMultiMap: The generic multi-map collection designed to store objects.
• TObjectMultiMap: The generic multi-map collection designed to store objects.
• TObjectSortedDistinctMultiMap: The generic distinct multi-map collection designed to store objects.
• TObjectSortedMultiMap: The generic multi-map collection designed to store objects.
• TSortedDistinctMultiMap: The generic distinct multi-map collection.
• TSortedMultiMap: The generic multi-map collection.