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Dev tools · alternatives · 2026

24 alternatives to Array with Constant Time Access and Fast Insertion and Deletion

Contribute to igushev/IgushArray development by creating an account on GitHub.

Array with Constant Time Access and Fast Insertion and Deletion is a data structure library launched in 2019. It provides an array implementation that maintains constant-time access to elements while supporting fast… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Array with Constant Time Access and Fast Insertion and Deletion launched in 2019; newer entries below may have overtaken it.

  1. 1

    Long-simmering side project that is finally ready to see the light. HAMTs are a cool persistent data structure and implementing one has been a lot of fun. Beyond the code, there is likely some value in the extensive and largely complete implementation docs; basic benchmarks are linked in the README, too. Kind of aiming to be "the libavl for HAMTs". That is obviously a high and aspirational bar but a distinct possibility if it stirs up a little interest and/or contribution. Anyways, it's time for this to go out, collect feedback and maybe even some use outside of toy projects. Let me…

    2023 · github.com · its alternatives →

  2. 2

    ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API - iamkun/dayjs

    2018 · github.com · its alternatives →

  3. 3

    Meta programming utilities for C++14. Merged in matt-42/lithium - matt-42/iod

    2014 · github.com · its alternatives →

  4. 4

    Faster user-land reimplementations for several common builtin native JavaScript functions. - codemix/fast.js

    2014 · github.com · its alternatives →

  5. 5

    Like a Python list but better. Contribute to Lauriat/funct development by creating an account on GitHub.

    2021 · github.com · its alternatives →

  6. 6

    🥞Data Structures and Algorithms explained and implemented in JavaScript + eBook - amejiarosario/dsa.js-data-structures-algorithms-javascript

    2019 · github.com · its alternatives →

  7. 7

    A fast and memory-optimized string library for C++ - btwael/SuperString

    2018 · github.com · its alternatives →

  8. 8JT
  9. 9FS

    2017 · louisabraham.github.io · its alternatives →

  10. 10

    A container for dataclasses with multi-indexing and bulk operations. - joshlk/dataclassframe

    2020 · github.com · its alternatives →

  11. 11
  12. 12

    Hash array library for JavaScript. Contribute to amaksr/Strelki.js development by creating an account on GitHub.

    2016 · github.com · its alternatives →

  13. 13

    This project presents a new data structure for storing ordered integer maps. The proposed data structure is a compressive, cache-friendly, radix tree that has performance comparable to an unordered map (`std::unordered_map`) and is an order of magnitude faster than an ordered map (`std::map`).

    2024 · github.com · its alternatives →

  14. 14

    A small, portable, linear probing hash map. Contribute to e-dant/salmagundi development by creating an account on GitHub.

    2024 · github.com · its alternatives →

  15. 15

    A C++ HTML template engine that uses compile time HTML parsing - rep-movsd/see-phit

    2017 · github.com · its alternatives →

  16. 16

    📶 A lock- and wait-free hashtable (and an array too) - mulle-concurrent/mulle-concurrent

    2016 · github.com · its alternatives →

  17. 17

    JAX in pure JavaScript, as a flexible machine learning library and compiler.

    Jan 2026 · ss.ekzhang.com · its alternatives →

  18. 18

    the JS/Node.JS library for encoding complex and unconventional data structures. Support for BigInts, TypedArrays, null, undefined, and Symbol. Multiple flavors available. - DO-SAY-GO/WeirdJSON

    2020 · github.com · its alternatives →

  19. 19

    Fast JSON encoder/decoder compatible with encoding/json for Go - goccy/go-json

    2021 · github.com · its alternatives →

  20. 20

    I'm looking for feedback on this approach to an immutable string (istring). The idea is to provide a super fast immutable string that can be efficiently passed to lambdas as well as be 100% thread safe. Another bonus is faster hashing. If a string literal is given to istring, then the hash is computed at compile time! Other strings will have their hashes cached for later use. The istring is designed more or less after the python string in this regard. It should also consume less memory than std::string and perform faster in all other areas.

    2014 · github.com · its alternatives →

  21. 21

    Two weeks ago I was on my babymoon in Corfu, Greece. While in transit, I was overseeing a GSoC intern submit an important feature to my array database library, Xarray-SQL. He added `to_dataset()`, which completed the roundtrip between thinking of array data in a tabular model simultaneously as gridded rasters (the premise of the project is that every Nd array can be mapped to 2d, where orthogonal dims of the Nd array are just primary keys of a tabular representation). We discussed in chat, now that this feature existed, what demos could we make that would prove this data model works? With…

    Jul 2026 · github.com · its alternatives →

  22. 22AF
  23. 23

    An ultra fast (0.0002s read/write), small & encrypted mobile key-value storage framework for React Native written in C++ using JSI - ammarahm-ed/react-native-mmkv-storage

    2020 · github.com · its alternatives →

  24. 24CL

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →