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parallel-hashmap
A family of header-only, very fast and memory-friendly hashmap and btree containers.
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Cool! Looking forward to you trying my phmap - and please let me know if you have any question.
The parallel flat hash map also easily goes toe to toe with the Xenium lockfree hash maps, those maybe taking the edge in some use cases when properly set up for the specifics of said use cases - which takes quite a bit of playing around with and benchmarking, and which are also quite a bit more work to figure out in the first place.
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