[Bug 198100] New port: devel/p5-Tree-Trie (Data structure optimized for prefix lookup)
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Sat Feb 28 16:46:05 UTC 2015
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198100
Bug ID: 198100
Summary: New port: devel/p5-Tree-Trie (Data structure optimized
for prefix lookup)
Product: Ports & Packages
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: Individual Port(s)
Assignee: freebsd-ports-bugs at FreeBSD.org
Reporter: gebhart at secnetix.de
Created attachment 153617
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=153617&action=edit
shar file of ports files
This module implements a trie data structure. The term "trie" comes from the
word retrieval, but is generally pronounced like "try". A trie is a tree
structure (or directed acyclic graph), the nodes of which represent letters
in a word. For example, the final lookup for the word 'bob' would look
something like $ref->{'b'}{'o'}{'b'}{'00'} (the 00 being an end marker).
Only nodes which would represent words in the trie exist, making the structure
slightly smaller than a hash of the same data set.
The advantages of the trie over other data storage methods is that lookup times
are O(1) WRT the size of the index. For sparse data sets, it is probably not as
efficient as performing a binary search on a sorted list, and for small files,
it has a lot of overhead. The main advantage (at least from my perspective) is
that it provides a relatively cheap method for finding a list of words in a
large, dense data set which begin with a certain string.
WWW: http://search.cpan.org/dist/Tree-Trie/
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