https://github.com/viercc/trie-simple

Simple Map-based trie implementation
https://github.com/viercc/trie-simple

datastructures haskell haskell-library

Last synced: 11 days ago
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Simple Map-based trie implementation

• Host: GitHub
• URL: https://github.com/viercc/trie-simple
• Owner: viercc
• License: bsd-3-clause
• Created: 2018-03-05T02:38:45.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2025-03-04T15:14:17.000Z (11 months ago)
• Last Synced: 2025-03-04T16:27:00.127Z (11 months ago)
• Topics: datastructures, haskell, haskell-library
• Language: Haskell
• Homepage:
• Size: 11.4 MB
• Stars: 3
• Watchers: 2
• Forks: 3
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# trie-simple

Trie data structure `TMap` to hold mapping from list of characters to

something, i.e. isomorphic to `Map [c] v`.

This package also contains `TSet`, which is isomorphic to `Set` of lists of

characters.

This package implements these structures using `Map` from containers

package, and require the character type to be only `Ord`.

Advantages of using this package over `Map` or `Set` are:

  * 2x Faster `lookup` (`member`) operation

  * Retrieving subset of map or set with given prefix

  * `append`, `prefixes`, and `suffixes` support

  * Can be more memory-efficient (but not always; needs

    benchmark anyway).

## Benchmarks

Benchmarks compared against plain `Map` and `Set`. 

![benchmark chart for TMap](https://raw.githubusercontent.com/viercc/trie-simple/master/doc/ratio-map.png)

![benchmark chart for TSet](https://raw.githubusercontent.com/viercc/trie-simple/master/doc/ratio-set.png)

Each of these benchmarks has two sets of point and errorbars, representing two datasets they are run against.

**Notice**: the datasets are **not** included in the tarball distributed from Hackage.

To run the benchmark, either get the entire repository from the source repository (GitHub) or

modify the benchmark program and supply any dataset of your choice.

## About License

[LICENSE](LICENSE) tells the licence of this project, EXCEPT

one file for benchmark input data. See [ABOUT](ABOUT) for that

file.

If you install `trie-simple` from Hackage, that input data is not

included in the distributed files.