Suggest an alternative to

concurrent_arena

Container that can have elements insert/removed concurrently and uses a 'u32' as key.

Why do you think that https://github.com/AndWass/pushgen is a good alternative to concurrent_arena

A URL to the alternative repo (e.g. GitHub, GitLab)

Here you can share your experience with the project you are suggesting or its comparison with concurrent_arena. Optional.

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