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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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  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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