From: Nicolas Petton <petton.nicolas@gmail.com>
To: "Stefan Monnier" <monnier@iro.umontreal.ca>
Cc: help-gnu-emacs@gnu.org
Subject: Re: Why aren't `find`, `find-if`, `remove-if` part of Emacs Lisp?
Date: Tue, 17 Jun 2014 20:36:31 +0200 [thread overview]
Message-ID: <87bntr8jtc.fsf@gmail.com> (raw)
In-Reply-To: <jwvfvj330pw.fsf-monnier+gmane.emacs.help@gnu.org>
Stefan Monnier writes:
>> Emacs Lisp is a great Lisp dialect, but I miss `find`, `find-if`,
>> `remove-if`, etc. iteration functions a lot. Sure, I can require cl-lib
>> or use dash, but I'm wondering why these functions are not part of the
>> base language?
>
> Not sure what you mean. Most languages I know provide list operations
> via libraries. Why should Elisp be different?
What I mean is that Elisp do not have `remove-if` (or any equivalent
function, I don't necessarily mean the CL remove-if function), a
function that I think could be in the language.
To filter lists, one has to implement its own version of this function,
or require an external library. Same goes for `find-if`.
I was wondering if Emacs Lisp was lacking this function for some reason
(or did I completely miss it? could be too). If not, why not add it to
the language? It looks to me like a badly missing feature, I think
filtering collections is something very common.
Cheers,
Nico
next prev parent reply other threads:[~2014-06-17 18:36 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-17 17:13 Why aren't `find`, `find-if`, `remove-if` part of Emacs Lisp? Nicolas Petton
2014-06-17 17:28 ` Stefan Monnier
2014-06-17 18:36 ` Nicolas Petton [this message]
2014-06-17 18:56 ` Doug Lewan
2014-06-17 19:06 ` Nicolas Petton
2014-06-17 19:55 ` Doug Lewan
2014-06-17 22:16 ` Stefan Monnier
2014-06-18 11:00 ` Nicolas Petton
[not found] ` <mailman.3879.1403089222.1147.help-gnu-emacs@gnu.org>
2014-06-18 14:36 ` Stefan Monnier
2014-06-18 14:43 ` Barry Margolin
2014-06-18 15:43 ` Damien Cassou
2014-06-18 16:31 ` Phillip Lord
[not found] ` <mailman.3896.1403106263.1147.help-gnu-emacs@gnu.org>
2014-06-24 13:51 ` Christoph Wedler
2014-06-24 16:24 ` Barry Margolin
2014-06-25 3:22 ` Stefan Monnier
2014-06-25 4:08 ` Leo Liu
[not found] ` <mailman.4252.1403669342.1147.help-gnu-emacs@gnu.org>
2014-06-25 13:46 ` Stefan Monnier
[not found] ` <mailman.4251.1403666567.1147.help-gnu-emacs@gnu.org>
2014-06-25 10:24 ` Christoph Wedler
2014-06-25 13:35 ` Stefan Monnier
2014-06-25 14:09 ` Stefan Monnier
2014-06-25 15:37 ` Barry Margolin
2014-06-25 23:44 ` Robert Thorpe
2014-06-18 14:43 ` Pascal J. Bourguignon
[not found] ` <mailman.3837.1403026153.1147.help-gnu-emacs@gnu.org>
2014-06-20 0:20 ` WJ
2014-06-20 13:45 ` Stefan Monnier
[not found] <mailman.3836.1403025251.1147.help-gnu-emacs@gnu.org>
2014-06-17 21:42 ` Barry Margolin
[not found] <mailman.4322.1403739913.1147.help-gnu-emacs@gnu.org>
2014-06-26 0:37 ` Stefan Monnier
2014-06-26 5:27 ` Barry Margolin
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