mudderjs

Lexicographically-subdivide the “space” between strings, by defining an alternate non-base-ten number system using a pre-defined dictionary of symbol↔︎number mappings. Handy for ordering NoSQL keys. (by fasiha)

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mudderjs reviews and mentions

Posts with mentions or reviews of mudderjs. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-01-15.
  • The surprisingly difficult problem of user-defined order in SQL
    2 projects | news.ycombinator.com | 15 Jan 2021
    I have solved this problem for my own purposes — no claims of grand scalability or high efficiency — by storing indices or "ranks" of items as strings (Postgres TEXT) using a library called mudderjs[0] and a thin wrapper around it[1]. Sorted lexicographically (in dictionary order) arbitrary-length strings have arbitrary precision. You can always find a string between any two strings; for instance, between "a" and "b" is "am" and between "a" and "ab" is "aam". You do have to have the entire ordered collection in scope to generate a new rank for an item, but reordering an item only requires updating one row and isn't subject to floating point precision.

    [0] https://github.com/fasiha/mudderjs

    [1] https://github.com/pubpub/pubpub/blob/master/utils/rank.ts

Stats

Basic mudderjs repo stats
1
94
4.7
3 months ago
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