From: Jean Louis <bugs@gnu.support>
To: Marcin Borkowski <mbork@mbork.pl>
Cc: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
Subject: Re: Is there any difference between `equal' and `string=' for strings?
Date: Thu, 19 Aug 2021 09:21:10 +0300 [thread overview]
Message-ID: <YR34VuhjTXer5b2z@protected.localdomain> (raw)
In-Reply-To: <875yw2vxqh.fsf@mbork.pl>
* Marcin Borkowski <mbork@mbork.pl> [2021-08-19 07:57]:
> Well, of course a string and a symbol can never be `equal', but they can
> be `string='. But what if both arguments are strings? The docstrings
> seem to imply that you can use `equal' and `string=' interchangeably and
> they will always give the exact same result. Is that correct?
(string-equal 123 "123") -- gives error, as string= is alias for
string-equal that is to handle exclusively strings.
(equalp 123 "123") -- does not give error.
Sometimes program outputs different types, could be `nil' or `string'
and those outputs maybe need to be expected as any type or as
exclusively strings. That is where the difference comes handy, as
sometimes I do want to get error report. If I wish to test strings I
better use `string='
--
Jean
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next prev parent reply other threads:[~2021-08-19 6:21 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-19 4:56 Is there any difference between `equal' and `string=' for strings? Marcin Borkowski
2021-08-19 6:21 ` Jean Louis [this message]
2021-08-19 23:14 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20 5:35 ` Jean Louis
2021-08-20 6:32 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21 9:05 ` Jean Louis
2021-08-21 19:14 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-19 15:35 ` [External] : " Drew Adams
2021-08-21 3:43 ` this is United States calling (was: Re: [External] : Is there any difference between `equal' and `string=' for strings?) Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21 3:49 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21 4:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21 5:39 ` FW: " Drew Adams
2021-08-21 19:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21 6:50 ` tomas
2021-08-21 19:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-19 23:02 ` Is there any difference between `equal' and `string=' for strings? Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20 5:25 ` Jean Louis
2021-08-20 6:24 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20 6:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20 23:12 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20 23:42 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21 0:08 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21 0:30 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21 9:08 ` Jean Louis
2021-08-21 19:17 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21 9:04 ` Jean Louis
2021-08-21 19:09 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-24 14:55 ` Marcin Borkowski
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