First I apologise if I should have been able to find this myself through search... I'm rusty and learning a lot of new stuff so I'm not even sure if I'm using the right terms to describe what I want - don't kick the noob please :)
Question: Part 1 - Specific scenario I am trying to build classes to produce a tree of "goal objects", where
a) order matters and needs to be retained,
b) each goal object in the tree may stand alone as a single object, or comprise a collection of subgoals (and those subgoals further subgoals etc - let's say to a depth of 5 levels),
c) ability to edit the tree efficiently is necessary (including changing the order or index of any goal object, adding / removing / reordering / moving subgoals, pruning/adding branches to the tree). I can certainly work out a way to do this, but I strongly suspect my way will be highly inefficient both in terms of memory / processing and in terms of quantity of code required to manage the editing etc.
My question therefor: Can anyone point me to a design pattern or tutorial that will show me an efficient way to do this - or something similar that I can adapt? (I am currently working in C# & ASP.NET Core with EFCore pointing to SQLserver)
Part 2: Recommendations for a book / site that has an excellent set of fundamental design patterns suitable for C# would also be welcome.
Many thanks for any help you can offer. Chris
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