From: Stefan Monnier <monnier@iro.umontreal.ca>
To: David Kastrup <dak@gnu.org>
Cc: "Stephen J. Turnbull" <stephen@xemacs.org>, emacs-devel@gnu.org
Subject: Re: Unary /
Date: Thu, 15 Oct 2015 14:45:21 -0400 [thread overview]
Message-ID: <jwvzizkotwn.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <871tcww7q9.fsf@fencepost.gnu.org> (David Kastrup's message of "Thu, 15 Oct 2015 16:02:06 +0200")
> (- 3) is not the same as (- 3 0) but as (- 0 3), just like (/ 3.0) is
> not the same as (/ 3.0 1.0) but as (/ 1.0 3.0).
Indeed, the - has the same asymmetry, but it seems that "unary -" is much
more commonly found operator than "unary /".
And I'm pretty sure there are many uses of (- X) out there, so we can't
really get rid of it.
Stefan
next prev parent reply other threads:[~2015-10-15 18:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-15 11:30 Unary / David Kastrup
2015-10-15 11:48 ` Stephen J. Turnbull
2015-10-15 11:54 ` David Kastrup
2015-10-15 12:00 ` Tassilo Horn
2015-10-15 12:17 ` David Kastrup
2015-10-15 13:31 ` Stefan Monnier
2015-10-15 14:02 ` David Kastrup
2015-10-15 18:45 ` Stefan Monnier [this message]
2015-10-15 19:20 ` Paul Eggert
2015-10-15 12:09 ` Andreas Schwab
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