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Re: evaluating numbers

From: Jean-Christophe Helary
Subject: Re: evaluating numbers
Date: Wed, 29 Apr 2020 08:16:47 +0900

Paul, Eli, thank you for the replies.

> On Apr 29, 2020, at 0:05, Eli Zaretskii <address@hidden> wrote:
>> From: Jean-Christophe Helary <address@hidden>
>> Date: Tue, 28 Apr 2020 23:52:48 +0900
>>> The answer to "why" is "because that's how characters are
>>> implemented".  The answer to "how" is "by interpreting the integer as
>>> character when the context requires that".
>> I'm sorry to get back to this now, but I'm reading an introduction to C in 
>> French where I found:
>> "Une des particularités du type char en C est qu’il peut être assimilé à un 
>> entier: tout objet de type char peut être utilisé dans une expression qui 
>> utilise des objets de type entier. Par exemple, si c est de type char, 
>> l’expression c + 1 est valide."
>> Is that the reason why characters are integers in emacs lisp too ?
> If you are asking why this happened historically, then I don't know: I
> wasn't there.  Maybe Richard can answer that.

@Eli Maybe historically but also generally speaking, is it more convenient to 
implement characters as integers because that was the way it is done in other 
languages like C (which plays an important part in Emacs) ?

@Paul I was asking about C because it seems to me that this part of emacs lisp 
is implemented in C, so if C does that then my uninformed idea is that it's 
easier create a similar implementation for emacslisp ?

Jean-Christophe Helary
http://mac4translators.blogspot.com @brandelune

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