Re: Always-true predicate?

[Lars Ingebrigtsen]

Andrea Corallo <akrl@sdf.org> writes:

> Maybe something like CONSTANTLY would be more generic?
>
> <http://www.lispworks.com/documentation/HyperSpec/Body/f_cons_1.htm>

I'm not sure that's a net win.  The use case here is, for instance

(defalias 'mouse-sel--ignore #'ignore)
(defvar after-focus-change-function #'ignore

etc, which is fast and easy to read.  If you're doing a predicate, you
now have to say

(setq some-predicate #'ignore)

but

(setq some-predicate (lambda (&rest _) t))

or

(setq some-predicate (constantly t))

which seems unsymmetric.

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