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From: Oleh <ohwoeowho@gmail.com>
To: Tassilo Horn <tsdh@gnu.org>
Cc: help-gnu-emacs@gnu.org
Subject: Re: Any disadvantages of using put/get instead of defvar?
Date: Fri, 21 Feb 2014 10:44:57 +0100	[thread overview]
Message-ID: <CAA01p3pKH5xfAz1DZFDfhVb11hcNrB1av4gU1s8-6a2qTGCKvQ@mail.gmail.com> (raw)
In-Reply-To: <87bny0x0rx.fsf@thinkpad-t61.fritz.box>

>> But doesn't `defvar` introduce overhead this way?
>
> Well, I've measured my counter above versus a version using symbol
> properties as you suggest:
>
>   (defun bar ()
>     (let ((foo (or (get 'bar 'foo) 1)))
>       (put 'bar 'foo (1+ foo))))
>
> My counter is way faster although it uses defvar and setq-local, so that
> overhead is still small compared to looking up/putting a symbol
> property.
>

Thanks, your suggestion wins then, since it's both pretty and fast.
If there's no new info in this issue, I'll just use your mehtod.

regards,
Oleh



  reply	other threads:[~2014-02-21  9:44 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-20 17:04 Any disadvantages of using put/get instead of defvar? Oleh
2014-02-20 22:24 ` Tassilo Horn
2014-02-21  1:40   ` Stefan Monnier
2014-02-21 10:29     ` Nicolas Richard
2014-02-21 13:57       ` Stefan Monnier
2014-02-21 11:49     ` Tassilo Horn
2014-02-21 14:41       ` Stefan Monnier
2014-02-21  9:12   ` Oleh
2014-02-21  9:39     ` Tassilo Horn
2014-02-21  9:44       ` Oleh [this message]
2014-02-21  9:51       ` Andreas Röhler
2014-02-21  9:56         ` Sebastian Wiesner
2014-02-21 11:56         ` Tassilo Horn
     [not found]         ` <mailman.15678.1392983787.10748.help-gnu-emacs@gnu.org>
2014-02-21 13:45           ` Helmut Eller

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