Re: Resources to learn common lisp?

From	Stefan Monnier <monnier@iro.umontreal.ca>
Newsgroups	comp.lang.lisp
Subject	Re: Resources to learn common lisp?
Date	2026-06-09 09:36 -0400
Organization	A noiseless patient Spider
Message-ID	<jwv5x3rg80j.fsf-monnier+comp.lang.lisp@gnu.org> (permalink)
References	<874inbqdz7.fsf@mariorosell.es> <87ecmf8488.fsf@bsb.me.uk> <874ina49v1.fsf@mariorosell.es> <87pl21m1i6.fsf@gmail.com> <1107n17$3k6ea$5@dont-email.me>

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> Lisp is purely garbage-collected though, isn’t it?

Most languages (Lisp included) don't specify how and when unreachable
objects are collected, as others pointed out.  Actually, most languages
don't even specify what counts as "unreachable" (Scheme being one of
the exceptions).

> Languages like Perl and Python try for a hybrid
> reference-counted/garbage-collected approach, for speed and also more
> deterministic memory usage in many common scenarios.

Probably not "for speed": it takes a significant amount of work to make
a reference-counting system that's competitive (speedwise) with
a tracing GC, because there tend to be *many* refcount updates (and it
gets worse if you support concurrency, where most of those updates
need to be made atomic).


=== Stefan

Thread

Resources to learn common lisp? Mario Rosell <mario@mariorosell.es> - 2026-02-20 22:53 +0100
  Re: Resources to learn common lisp? Ben Bacarisse <ben@bsb.me.uk> - 2026-02-20 22:00 +0000
    Re: Resources to learn common lisp? Mario Rosell <mario@mariorosell.es> - 2026-02-21 12:25 +0100
      Re: Resources to learn common lisp? Stefan Monnier <monnier@iro.umontreal.ca> - 2026-02-21 10:24 -0500
      Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-02-21 21:30 +0000
        Re: Resources to learn common lisp? Mario Rosell <mario@mariorosell.es> - 2026-02-22 01:08 +0100
          Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-02-22 04:59 +0000
            Re: Resources to learn common lisp? Madhu <enometh@meer.net> - 2026-02-22 10:59 +0530
              Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-02-22 21:48 +0000
                Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-08 12:43 -0400
        Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-08 12:41 -0400
          Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-08 20:02 +0000
            Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-09 00:23 -0400
              Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-09 06:28 +0000
                Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-09 06:32 +0000
                Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-10 12:27 -0400
                Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-11 17:33 +0000
                Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-10 12:16 -0400
            Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-09 06:53 +0000
              Re: Resources to learn common lisp? Axel Reichert <mail@axel-reichert.de> - 2026-06-09 12:07 +0200
                Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-10 00:14 +0000
              Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-11 17:22 +0000
          Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-09 00:35 +0000
      Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-08 12:37 -0400
        Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-09 00:33 +0000
          Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-09 00:22 -0400
          Re: Resources to learn common lisp? Alan Bawden <alan@csail.mit.edu> - 2026-06-09 01:22 -0400
            Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-09 06:17 +0000
            Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-09 06:50 +0000
              Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-10 12:40 -0400
                Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-11 00:26 +0000
                Re: Resources to learn common lisp? George Neuner <gneuner2@comcast.net> - 2026-06-11 05:27 -0400
            Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-10 12:24 -0400
              Re: Resources to learn common lisp? George Neuner <gneuner2@comcast.net> - 2026-06-11 05:57 -0400
              Re: Resources to learn common lisp? Alan Bawden <alan@csail.mit.edu> - 2026-06-11 21:07 -0400
                Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-12 13:06 +0000
                Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-13 00:13 +0000
                Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-13 07:25 +0000
                Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-13 08:25 +0000
                Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-13 08:46 +0000
                Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-13 08:52 +0000
                Re: Resources to learn common lisp? Alan Bawden <alan@csail.mit.edu> - 2026-06-13 00:55 -0400
                Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-13 07:43 +0000
              Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-12 12:42 +0000
          Re: Resources to learn common lisp? Stefan Monnier <monnier@iro.umontreal.ca> - 2026-06-09 09:36 -0400
            Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-10 00:06 +0000
              Re: Resources to learn common lisp? Stefan Monnier <monnier@iro.umontreal.ca> - 2026-06-10 08:43 -0400
                Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-11 00:22 +0000
                Re: Resources to learn common lisp? Stefan Monnier <monnier@iro.umontreal.ca> - 2026-06-11 08:57 -0400
                Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-12 00:16 +0000
              Re: Resources to learn common lisp? George Neuner <gneuner2@comcast.net> - 2026-06-11 06:37 -0400
              Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-11 17:42 +0000
                Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-12 00:16 +0000
                Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-12 12:34 +0000
                Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-13 00:11 +0000
                Re: Resources to learn common lisp? George Neuner <gneuner2@comcast.net> - 2026-06-13 04:06 -0400
                Re: Resources to learn common lisp? tfb <no_email@invalid.invalid> - 2026-06-13 08:36 +0000
  Re: Resources to learn common lisp? tpeplt <tpeplt@gmail.com> - 2026-02-20 17:44 -0500
    Re: Resources to learn common lisp? Mario Rosell <mario@mariorosell.es> - 2026-02-21 12:30 +0100
  Re: Resources to learn common lisp? ram@zedat.fu-berlin.de (Stefan Ram) - 2026-02-20 23:50 +0000
    Re: Resources to learn common lisp? ram@zedat.fu-berlin.de (Stefan Ram) - 2026-02-21 00:24 +0000
      Re: Resources to learn common lisp? Andreas Eder <a_eder_muc@web.de> - 2026-02-21 11:36 +0100
      Re: Resources to learn common lisp? Mario Rosell <mario@mariorosell.es> - 2026-02-21 12:44 +0100
  Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-03-31 17:47 -0400
    Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-31 23:41 +0000
    Re: Resources to learn common lisp? tpeplt <tpeplt@gmail.com> - 2026-04-01 13:23 -0400
  Re: Resources to learn common lisp? Peri Didaskalou <pfd@torfree.net> - 2026-05-01 10:52 -0400
  Re: Resources to learn common lisp? Peri Didaskalou <pfd@torfree.net> - 2026-05-01 10:57 -0400
  Re: Resources to learn common lisp? Peri Didaskalou <pfd@torfree.net> - 2026-05-01 11:06 -0400
  Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-01 14:56 -0400
    Re: Resources to learn common lisp? "Robert B. Carleton" <rbc@rbcarleton.net> - 2026-06-01 23:02 +0000
      Re: Resources to learn common lisp? steve g <sgonedes1977@gmail.com> - 2026-06-02 21:32 -0400
        Re: Resources to learn common lisp? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-03 03:16 +0000

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