From: Drew Adams <drew.adams@oracle.com>
To: "Mattias Engdegård" <mattiase@acm.org>,
"48261@debbugs.gnu.org" <48261@debbugs.gnu.org>,
Philipp <p.stephani2@gmail.com>
Subject: bug#48261: [External] : bug#48261: 28.0.50; Optimize `eql' to `eq' for fixnums
Date: Fri, 7 May 2021 15:24:59 +0000 [thread overview]
Message-ID: <SA2PR10MB447471229833CD847AB02B02F3579@SA2PR10MB4474.namprd10.prod.outlook.com> (raw)
In-Reply-To: <1611E274-F759-4BBE-B136-FB6CDFD557B5@acm.org>
> (We really should have fast, readable, always-available
> standard functions or macros for 'some' and 'every' on lists.)
Does this qualify?
(defun some-elt-p (xs pred)
"Return non-nil if (PRED X) is true for some element of list XS."
(catch 'some-element-p
(dolist (x xs)
(and (funcall pred x) (throw 'some-element-p t)))))
(defun all-elts-p (xs pred)
"Return non-nil if (PRED X) is true for all elements of list XS."
(catch 'all-elts-p
(dolist (x xs t)
(or (funcall pred x) (throw 'all-elts-p nil)))))
[I think I'd prefer the opposite arg order: PRED first,
but this is at least the same as what CL uses. Consider
(apply-partially #'some-elt-p PRED), for instance.]
next prev parent reply other threads:[~2021-05-07 15:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-06 17:20 bug#48261: 28.0.50; Optimize `eql' to `eq' for fixnums Philipp Stephani
2021-05-07 9:23 ` Mattias Engdegård
2021-05-07 15:24 ` Drew Adams [this message]
2021-05-08 9:17 ` Philipp
2021-05-08 13:26 ` Mattias Engdegård
2021-05-16 12:48 ` Philipp Stephani
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