From: "Drew Adams" <drew.adams@oracle.com>
To: 'Nordlöw' <per.nordlow@gmail.com>, help-gnu-emacs@gnu.org
Subject: RE: Wanted: Adding list-elements into an existing list
Date: Thu, 16 Oct 2008 08:43:48 -0700 [thread overview]
Message-ID: <002c01c92fa5$fba25940$c2b22382@us.oracle.com> (raw)
In-Reply-To: <f3c2bc36-6120-4567-9297-3e91bf32e350@u46g2000hsc.googlegroups.com>
> (append) does not modify its first argument which is what I want.
> I can solve it through (setq x (append x y))
Depends what you want. You mentioned `add-to-list', which adds an element only
if it is not already there. Neither `append' nor `nconc' does that for combining
lists.
Sounds more like you want something like set intersection: see functions
`intersection' or `nintersection' in library `cl-seq.el'.
next prev parent reply other threads:[~2008-10-16 15:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-16 13:13 Wanted: Adding list-elements into an existing list Nordlöw
2008-10-16 13:16 ` Joost Diepenmaat
2008-10-16 13:36 ` Nordlöw
2008-10-16 15:43 ` Drew Adams [this message]
2008-10-16 16:02 ` Allan Gottlieb
2008-10-16 16:12 ` Drew Adams
2008-10-17 0:28 ` Barry Margolin
2008-10-16 22:32 ` Pascal J. Bourguignon
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