From: Nordlöw <per.nordlow@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Chained Object Type Predicates
Date: Mon, 8 Jun 2009 05:39:58 -0700 (PDT) [thread overview]
Message-ID: <80c94ce8-8e0b-4ebe-a575-f1f25a6fd734@n8g2000vbb.googlegroups.com> (raw)
How should i implement chained type predicate functions, for example
(defun list-of-numbers-p (object) (and (listp object) ...))
should return t if object is of type list (listp) and its elements in
turn all are of type string (stringp) otherwise nil.
Thanks in advance,
Per Nordlöw
next reply other threads:[~2009-06-08 12:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-08 12:39 Nordlöw [this message]
2009-06-08 12:58 ` Chained Object Type Predicates Pascal J. Bourguignon
2009-06-08 13:36 ` Lennart Borgman
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