alexandria-devel October 2008

alexandria-devel@common-lisp.net

3 participants
4 discussions

[alexandria-devel] Review cycle 2: SWITCH, ESCWITCH, and CSWITCH
by Nikodemus Siivola 08 Apr '10

08 Apr '10

macro switch ((object &key test key) &body clauses) "Evaluates first matching clause, returning its values, or evaluates and returns the values of DEFAULT if no keys match." macro eswitch ((object &key test key) &body clauses) "Like SWITCH, but signals an error if no key matches." cswitch ((object &key test key) &body clauses) "Like SWITCH, but signals a continuable error if no key matches."

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[alexandria-devel] darcs patch: Add #.#+ readtime conditional functions.
by asf＠boinkor.net 02 Oct '09

02 Oct '09

Mon Oct 16 10:00:31 CEST 2006 asf(a)boinkor.net * Add #.#+ readtime conditional functions. * This adds functions that can be used in #+#. readtime conditionals, for example: #+#.(alexandria:read-if (find-package :asdf-install)) :yay #+#.(alexandria:read-if-fbound :install :asdf-install :exportedp t) :yay * included in the patch is a commented-out portion that allows the user to activate a #? read syntax. I'm not sure if that fits into the conservativism constraints.

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[alexandria-devel] Fwd: PROG1-LET
by Nikodemus Siivola 27 Oct '08

27 Oct '08

Oops, missed the list. ---------- Forwarded message ---------- From: Nikodemus Siivola <nikodemus(a)random-state.net> Date: Mon, Oct 27, 2008 at 11:32 PM Subject: Re: [alexandria-devel] PROG1-LET To: "Tobias C. Rittweiler" <tcr(a)freebits.de> On Mon, Oct 27, 2008 at 9:52 PM, Tobias C. Rittweiler <tcr(a)freebits.de> wrote: > I know from experience that this scheme comes up occasionally, but I > think it's an abuse of macros. It's purely a syntactic abbreviation that > does neither save much typing nor does the name improve readability. I'm inclined to agree: (PROG1-LET (X (FOO)) (BAR X) (QUUX X)) is easily taken to mean (LET ((X (FOO))) (PROG1 (BAR X) (QUUX X))) (Well, I'm not sure about abuse part, but readability seems to suffer.) Cheers, -- Nikodemus

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[alexandria-devel] PROG1-LET
by Volkan YAZICI 27 Oct '08

27 Oct '08

Hi, Do alexandria developers consider including PROG1-LET? (I find it quite useful, and it is included in the very early lines of nearly every of my utils.lisp files.) (defmacro prog1-let ((var val) &body body) `(let ((,var ,val)) ,@body ,var)) Regards.

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alexandria-devel October 2008