From: Helmut Eller <eller.helmut@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: Performance of String Operations
Date: Sun, 11 Oct 2009 17:38:52 +0200 [thread overview]
Message-ID: <m2skdq9bzn.fsf@gmail.com> (raw)
In-Reply-To: e6535800-cf57-4329-a392-4210959abab4@l13g2000yqb.googlegroups.com
* Nordlöw [2009-10-11 08:41+0200] writes:
> Does Emacs contain append/prepend/concat functions for strings that
> modify one of its (first) arguments (for side effects only)?
Emacs has buffers for fast insert/append/prepend.
> If so, why not?: Isn't such a function crucial to the performance of a
> language, regarding that strings is such a common object type?
The size of strings is constant an cannot be changed.
Strings are arrays.
> Or does the Emacs compiler optimize such things? Can I somehow
> investigate how Emacs has optimized my lisp code?
M-x disassemble
Helmut
next prev parent reply other threads:[~2009-10-11 15:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-11 6:41 Performance of String Operations Nordlöw
2009-10-11 10:05 ` Xah Lee
2009-10-11 14:40 ` Colin S. Miller
2009-10-11 15:38 ` Helmut Eller [this message]
2009-10-11 17:29 ` Pascal J. Bourguignon
2009-10-11 20:58 ` John A Pershing Jr
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