[Python-Dev] Proposal: add odict to collections (original) (raw)

Talin talin at acm.org
Sun Jun 15 05:42:24 CEST 2008

Michael Foord wrote:

Armin Ronacher wrote:

Hi,

I noticed lately that quite a few projects are implementing their own subclasses of dict that retain the order of the key/value pairs. However half of the implementations I came across are not implementing the whole dict interface which leads to weird bugs, also the performance of a Python implementation is not that great.

I'm +1 - but this proposal has been made many times before and people always argue about what features are needed or desirable. :-(

There's been a lot of controversy/confusion about ordered dicts. One of the sources of confusion is that people mean different things when they use the term "ordered dict": In some cases, the term is used to mean a dictionary that remembers the order of insertions, and in other cases it is used to mean a sorted dict, i.e. an associative data structure in which the entries are kept sorted. (And I'm not sure that those are the only two possibilities.)

I would be more in favor of the idea if we could come up with a less ambiguous naming scheme.

-- Talin

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