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LiveUpdated 2026-10-30 20:27 UTC

fastconstmap

fastconstmap — Fast, immutable, compact map from strings to uint64 (binary fuse filter).

fastconstmap is Fast, immutable, compact map from strings to uint64 (binary fuse filter).. It is ranked #584 on the Dev Radar, in Languages & runtimes, first seen 2 days ago and shared in 1 post (3.6k views).

Visit pypi.org

fastconstmap · PyPI Skip to main content Switch to mobile version Warning You are using an unsupported browser, upgrade to a newer version. Warning Some features may not work without JavaScript. Please try enabling it if you encounter problems. Search PyPI search-focus#focusSearchField" data-search-focus-target="searchField"> Search Search PyPI Search fastconstmap 0.11.0 Fast, immutable, compact map from strings to uint64 (binary fuse filter). pip install fastconstmap Copy PIP instructions fastconstmap Fast, immutable, compact map from strings to 64-bit integers — for Python. fastconstmap is a C implementation of the binary fuse filter…

What people said about fastconstmap on X

Released fastconstmap 0.11.0 with free-threaded Python support (3.13t / 3.14t). It is an immutable map from strings to 64-bit integers using binary fuse filters. It uses about 9 bytes per key (18 if you want missing-key detection), one xxhash plus three array reads per lookup, and a batched API for even more speed.…

— @lemire, 2 days ago · 75 likes · see the post

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fastconstmap in numbers

FAQ

What is fastconstmap?

Fast, immutable, compact map from strings to uint64 (binary fuse filter). It was first shared on X 2 days ago and is ranked #584 on the Dev Radar.

Is fastconstmap free?

It is open source.

Who shared fastconstmap?

1 account on X, including @lemire, in 1 post totalling 3.6k views.

Every post is read and classified by AGK Intelligence: what it is, which market it belongs to, and whether the link is a real tool. 31.2k posts from 5k X accounts over the last 21 days, 8.8k tools, 12 markets. New posts are collected several times an hour and the full ranking is recomputed every hour — last update 2026-10-30 20:27 UTC. Full method.