* Quoted lambda expressions
@ 2013-08-17 8:32 Xue Fuqiao
2013-08-17 9:24 ` Pascal J. Bourguignon
0 siblings, 1 reply; 3+ messages in thread
From: Xue Fuqiao @ 2013-08-17 8:32 UTC (permalink / raw)
To: emacs-devel
Hi,
AFAIK "(function (lambda ...))" and "#'(lambda ...)" are the same as
"(lambda ...)", because in subr.el:
(defmacro lambda (&rest cdr)
[...]
(list 'function (cons 'lambda cdr)))
But the first two forms are used 600+ times in lisp/ and 13 times in
doc/. Does it make sense to do some cleanup?
(And some of them should not be changed, such as the one in "(elisp)
Anonymous Functions".)
--
Best regards, Xue Fuqiao.
http://www.gnu.org/software/emacs/
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Quoted lambda expressions
2013-08-17 8:32 Quoted lambda expressions Xue Fuqiao
@ 2013-08-17 9:24 ` Pascal J. Bourguignon
2013-08-17 9:36 ` Andreas Schwab
0 siblings, 1 reply; 3+ messages in thread
From: Pascal J. Bourguignon @ 2013-08-17 9:24 UTC (permalink / raw)
To: emacs-devel
Xue Fuqiao <xfq.free@gmail.com> writes:
> AFAIK "(function (lambda ...))" and "#'(lambda ...)" are the same as
> "(lambda ...)", because in subr.el:
>
> (defmacro lambda (&rest cdr)
> [...]
> (list 'function (cons 'lambda cdr)))
>
> But the first two forms are used 600+ times in lisp/ and 13 times in
> doc/. Does it make sense to do some cleanup?
>
> (And some of them should not be changed, such as the one in "(elisp)
> Anonymous Functions".)
That lambda macro was a late addition in the standardization of Common
Lisp. I assume it was similarly late in emacs lisp. That's the reason
why some lisp programmers use #'(lambda …) instead of (lambda …).
--
__Pascal Bourguignon__
http://www.informatimago.com/
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2013-08-17 8:32 Quoted lambda expressions Xue Fuqiao
2013-08-17 9:24 ` Pascal J. Bourguignon
2013-08-17 9:36 ` Andreas Schwab
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