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I've seen the reference implementations for dictionary and sorted dictionary. I've even fiddled with them in binary form way back when with Reflector. I expect the inserts and removal times to be longer - i'd be surprised if they weren't, but the searches? This is just wrong.
(The AVL tree implementation sucks - it will be improved)
Thank you for the polite tone of your response, Peter.
I am aware of Chris' comment on the prior post, and I do not interpret it as being a "blanket" invitation for posts, like this one, which are nothing but code. There is no "discussion" inherent in this post.
I take the privilege of being a "mentor" on CP seriously, and when I see content like this, which could contribute to the quality of CP in the long run ... if posted on the appropriate technical forum ... I will speak out.
«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali
The .NET BCL code has 2 advantage.
1. it runs in release mode (yours probably run in debug mode)
2. it has been precompiled ahead of time. (i.e. NGEN). NGEN does a better job sometimes.. though not sure it does that much better on library... (as opposed to program)
(bonus point) well you said you check the reference implementation so might not be true. but .NET BCL is heavily optimised (I used reflector sometimes and I was surprised by the length they occasionally go to to make common codepath faster)