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marisa-trie reviews and mentions
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Ask HN: What are some 'cool' but obscure data structures you know about?
My favorite one that I've had the chance to use professionally is the Marisa trie[0].
Context is a data scientist had written a service that essentially was just lookups on a trie. He'd left and the service was starting to have memory problems so I dug in and swapped the implementation. Iirc swapping the trie implementation changed memory usage from 8gb to 100mb and sped everything up as well.
The actual data structure is equivalent to a trie, but cannot be modified once it's been built (I think it may be the same as a LOUDS trie, I don't remember the specifics)
[0] https://github.com/s-yata/marisa-trie
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s-yata/marisa-trie is an open source project licensed under GNU General Public License v3.0 or later which is an OSI approved license.
The primary programming language of marisa-trie is C++.
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