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Author terry.reedy
Recipients docs@python, terry.reedy
Date 2011-05-26.18:19:31
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Message-id <1306433972.91.0.882585972593.issue12188@psf.upfronthosting.co.za>
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Content
In response to a discussion of a patch removing 'useless' post-increments, (which issue has apparently come up before)
Guido posted
"> Sorry to butt in here, but I agree with Eric that it was better
> before. There is a common idiom, *pointer++ =<something>, and
> whenever you see that you know that you are appending something to an
> output buffer. Perhaps the most important idea here is that this
> maintains the *invariant* "pointer points just after the last thing in
> the buffer". Always maintaining the invariant is better than trying to
> micro-optimize things so as to avoid updating dead values. The
> compiler is better at that."

A condensed version of the above added to PEP 7 would help new developers see the usage as local idiom rather than style bug.
History
Date User Action Args
2011-05-26 18:19:32terry.reedysetrecipients: + terry.reedy, docs@python
2011-05-26 18:19:32terry.reedysetmessageid: <1306433972.91.0.882585972593.issue12188@psf.upfronthosting.co.za>
2011-05-26 18:19:32terry.reedylinkissue12188 messages
2011-05-26 18:19:31terry.reedycreate