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An Ordered Set implementation in Cython.

Project description

===========
Ordered Set
===========

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An Ordered Set implementation in Cython. Based on `Raymond Hettinger's OrderedSet recipe`_.

Example::

>>> from orderedset import OrderedSet
>>> oset = OrderedSet([1, 2, 3])
>>> oset
OrderedSet([1, 2, 3])
>>> oset | [5, 4, 3, 2, 1]
OrderedSet([1, 2, 3, 5, 4])

* Free software: BSD license
* Documentation: http://orderedset.rtfd.org.

Features
--------

* Works like a regular set, but remembers insertion order;
* Is approximately 5 times faster than the pure Python implementation overall
(and 5 times slower than :class:`set`);
* Compatible with Python 2.6 through 3.4.;
* Supports the full set interface;
* Supports some list methods, like :meth:`index` and :meth:`__getitem__`.

.. _`Raymond Hettinger's OrderedSet recipe`: http://code.activestate.com/recipes/576694/


=========
Changelog
=========

Here's the recent changes to Ordered Set.

.. changelog::
:version: 1.0
:released: 2014-05-11

.. change::
:tags: general

First implementation.

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