text-trie: An efficient finite map from Text to values, based on bytestring-trie.
An efficient finite map from Text to values, based on bytestring-trie.
The implementation is based on big-endian patricia trees, like Data.IntMap. We first trie on the elements of Data.ByteString and then trie on the big-endian bit representation of those elements. Patricia trees have efficient algorithms for union and other merging operations, but they're also quick for lookups and insertions.
If you are only interested in being able to associate
strings to values, then you may prefer the hashmap
package which is faster for those only needing a
map-like structure. This package is intended for
those who need the extra capabilities that a trie-like
structure can offer (e.g., structure sharing to
reduce memory costs for highly redundant keys,
taking the submap of all keys with a given prefix,
contextual mapping, extracting the minimum and
maximum keys, etc.)
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| Versions [RSS] | 0.2.5.0 |
|---|---|
| Change log | CHANGELOG |
| Dependencies | base (>=4.5 && <4.13), binary (>=0.5.1 && <0.8.7), text (>=1.2.3 && <1.2.4) [details] |
| License | BSD-3-Clause |
| Copyright | Copyright (c) 2008--2019 wren gayle romano, 2019 michael j. klein |
| Author | wren gayle romano, michael j. klein |
| Maintainer | lambdamichael@gmail.com |
| Category | Data, Data Structures |
| Home page | http://github.com/michaeljklein/text-trie |
| Source repo | head: git clone https://github.com/michaeljklein/text-trie.git |
| Uploaded | by lambdamichael at 2019-04-11T19:52:45Z |
| Distributions | |
| Reverse Dependencies | 1 direct, 0 indirect [details] |
| Downloads | 955 total (2 in the last 30 days) |
| Rating | (no votes yet) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs available [build log] Last success reported on 2019-04-11 [all 1 reports] |
Readme for text-trie-0.2.5.0
[back to package description]text-trie
The text-trie package is a lightweight adaptation of bytestring-trie to Text.
For the differences in performance, see bench.md.
bytestring-trie
The bytestring-trie package provides an efficient implementation
of tries mapping ByteString to values. The implementation is
based on Okasaki's big-endian patricia trees, à la IntMap. We
first trie on the elements of ByteString and then trie on the
big-endian bit representation of those elements. Patricia trees
have efficient algorithms for union and other merging operations,
but they're also quick for lookups and insertions.
If you are only interested in being able to associate individual
ByteStrings to values, then you may prefer the hashmap package
which is faster for those only needing a map-like structure. This
package is intended for those who need the extra capabilities that
a trie-like structure can offer (e.g., structure sharing to reduce
memory costs for highly redundant keys, taking the submap of all
keys with a given prefix, contextual mapping, extracting the minimum
and maximum keys, etc.)
Install
This is a simple package and should be easy to install. You should be able to use one of the following standard methods to install it.
-- With stack and without the source:
$> stack install text-trie
-- With stack and with the source already:
$> cd text-trie
$> stack install
Portability
The implementation only relies on a few basic
language extensions and DeriveGeneric. The complete list of extensions used is:
CPPMagicHashNoImplicitPreludeStandaloneDerivingDeriveGeneric