Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Sebastian <sebastian@here.com.invalid>
Newsgroups: comp.unix.shell,comp.unix.programmer,comp.lang.misc
Subject: Re: Command Languages Versus Programming Languages
Date: Sun, 25 Aug 2024 07:32:26 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 54
Message-ID: <vaemm8$1q5l3$1@dont-email.me>
References: <uu54la$3su5b$6@dont-email.me>   <LISP-20240402091729@ram.dialup.fu-berlin.de> <wrap-20240402092558@ram.dialup.fu-berlin.de> <uui7hf$3gona$1@dont-email.me> <uuj1o5$3pvnq$1@dont-email.me> <87plv6jv1i.fsf@nosuchdomain.example.com> <wwv5xwyifq8.fsf@LkoBDZeT.terraraq.uk> <if-20240404121825@ram.dialup.fu-berlin.de> <uund4g$ugsb$1@dont-email.me> <uup8ul$1fr2t$1@dont-email.me> <indentation-20240405183703@ram.dialup.fu-berlin.de> <v8sleh$1g9s4$1@dont-email.me> <v8ubtt$1u86k$1@dont-email.me>
Injection-Date: Sun, 25 Aug 2024 09:32:26 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="9279a399661a58fbc808a307433981c4";
	logging-data="1906339"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX18ztU4y1kTYT7WfpLifqD4iNdBvHnZvX6A="
User-Agent: tin/2.6.2-20221225 ("Pittyvaich") (Linux/6.1.0-18-amd64 (x86_64))
Cancel-Lock: sha1:xMy9/VCcJpeMiyJ8/TnXZGVE6bo=
Bytes: 2526

In comp.unix.programmer Lawrence D'Oliveiro <ldo@nz.invalid> wrote:
> On Tue, 6 Aug 2024 08:04:35 -0000 (UTC), Sebastian wrote:
> 
>> Better:
>> 
>>   a = b ? (c ? d : e) :
>>       f ? (g ? h : i) :
>>       j;
> 
> Better still (fewer confusing parentheses):
> 
>     a =
>         b ?
>             c ? d : e
>         : f ?
>             g ? h : i
>         : j;

I find this more confusing than the parentheses.

>> Equivalent Lisp, for comparison:
>> 
>>   (setf a (cond (b (if c d e))
>>                 (f (if g h i))
>>                 (t j)))
> 
> You can?t avoid the parentheses, but this, too, can be improved:
> 
>     (setf a
>         (cond
>             (b
>                 (if c d e)
>             )
>             (f
>                 (if g h i)
>             )
>             (t
>                 j
>             )
>         ) ; cond
>     )

If you insist on writing Lisp like that, you might as well do
this:

(ql:quickload :with-c-syntax)
(named-readtables:in-readtable with-c-syntax:with-c-syntax-readtable)

#{
   a = b ? (c ? d : e) :
       f ? (g ? h : i) :
       j;
#}