# rose-trie: Trees with polymorphic paths to nodes, combining properties of Rose Trees and Tries.

A rose tree is a tree of trees, where every node contains a leaf and set of sub-trees. A trie is a tree structure where each node can be accessed using a "path," where a path is a list of keys. A rose-trie does both. RoseTries are best used in situations where every leaf in the Trie needs to accessible by a list of polymorphic path elements.

The underlying implementation is based on Data.Map, from the Haskell
Platform's "containers" package. So unlike the ordinary rose tree, where each
node contains a list of sub-trees, the RoseTrie contains a Map of sub-trees,
where each key in the Map forms a single link in the trie path. As a result, the
path for the RoseTrie is a list data type that is polymorphic over list elements
which instantiate both the `Prelude.Ord`

and `Prelude.Eq`

type classes.

Operating on a RoseTrie with a path of length `p`

performs up to `p`

times a
number of `O(log n)`

Map operations on each of the sub-tree Map structures
containing `n`

elements, therefore path lookups and insertions in a RoseTrie
data structure are on the order of `O(p * log n)`

time complexity.

This library was originally part of the Dao package, but has been branched into it's own package in the hopes that it will be useful in a wider variety of projects.

Versions [faq] | 0.1.0.0, 1.0.0.0, 1.0.0.1, 1.0.0.2, 1.0.0.3, 1.0.0.4, 1.0.0.5 |
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Dependencies | base (>=4.7 && <4.9), containers (>=0.5.5.0 && <0.7.0.0), deepseq (>=1.2.0.0 && <1.5.0.0), minilens (>=1.0.0.1 && <=2.0.0.0), mtl (>=2.2.0 && <=2.2.1), transformers (>=0.3.0.0 && <=0.4.3.0) [details] |

License | GPL-3.0-only |

Copyright | 2008-2016 Ramin Honary |

Author | Ramin Honary |

Maintainer | ramin.honary@gmail.com |

Category | Data |

Home page | https://github.com/RaminHAL9001/rose-trie |

Uploaded | by RaminHonary at Mon Mar 27 08:27:22 UTC 2017 |

Distributions | NixOS:1.0.0.5 |

Downloads | 1723 total (122 in the last 30 days) |

Rating | (no votes yet) [estimated by rule of succession] |

Your Rating | |

Status | Docs uploaded by user [build log] All reported builds failed as of 2017-03-27 [all 3 reports] |

## Downloads

- rose-trie-1.0.0.5.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)