* How to avoid introducing global symbols by setq in function?
@ 2016-11-18 1:10 zhanghj
2016-11-18 8:33 ` Marcin Borkowski
0 siblings, 1 reply; 3+ messages in thread
From: zhanghj @ 2016-11-18 1:10 UTC (permalink / raw)
To: help-gnu-emacs
As in the following code:
(let ((var1 100)) ;; default value
(when some_condition
;; new value
(setq varl 200))
(message "value: %d" varl))
Should use "var1", but write "varl" by typo.
If some_condition is non-nil, there will be no error and no warnning.
How to check these mistakes?
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: How to avoid introducing global symbols by setq in function? 2016-11-18 1:10 How to avoid introducing global symbols by setq in function? zhanghj @ 2016-11-18 8:33 ` Marcin Borkowski 2016-11-21 8:30 ` zhanghj 0 siblings, 1 reply; 3+ messages in thread From: Marcin Borkowski @ 2016-11-18 8:33 UTC (permalink / raw) To: zhanghj; +Cc: help-gnu-emacs On 2016-11-18, at 02:10, zhanghj <netjunegg@gmail.com> wrote: > As in the following code: > > (let ((var1 100)) ;; default value > (when some_condition > ;; new value > (setq varl 200)) > (message "value: %d" varl)) > > Should use "var1", but write "varl" by typo. > If some_condition is non-nil, there will be no error and no warnning. > > How to check these mistakes? Have you tried to byte-compile that code? Best, -- Marcin Borkowski ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to avoid introducing global symbols by setq in function? 2016-11-18 8:33 ` Marcin Borkowski @ 2016-11-21 8:30 ` zhanghj 0 siblings, 0 replies; 3+ messages in thread From: zhanghj @ 2016-11-21 8:30 UTC (permalink / raw) To: Marcin Borkowski; +Cc: help-gnu-emacs I just tried. The warnning message told me what I want. Thank you. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2016-11-21 8:30 UTC | newest] Thread overview: 3+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2016-11-18 1:10 How to avoid introducing global symbols by setq in function? zhanghj 2016-11-18 8:33 ` Marcin Borkowski 2016-11-21 8:30 ` zhanghj
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