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From: Michael S <already5chosen@yahoo.com>
Newsgroups: comp.lang.c
Subject: Re: Top 10 most common hard skills listed on resumes...
Date: Sun, 8 Sep 2024 16:34:32 +0300
Organization: A noiseless patient Spider
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Message-ID: <20240908163432.00003f8f@yahoo.com>
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On Sun, 8 Sep 2024 11:27:33 +0100
Bart <bc@freeuk.com> wrote:

> On 08/09/2024 09:58, Michael S wrote:
> > On Sun, 8 Sep 2024 05:44:16 +0200
> > Janis Papanagnou <janis_papanagnou+ng@hotmail.com> wrote:
> >   
> >> On 06.09.2024 13:34, Bart wrote:  
> >>>
> >>> In more complicated cases in languages, then some asymmetry does
> >>> come up. For example, suppose C allowed this (my language allows
> >>> the equivalent):
> >>>
> >>>     (c ? a : b) = x;  
> >>
> >> In Algol 68 you can write
> >>
> >>      IF c THEN a ELSE b FI := x
> >>
> >> or, in a shorter form, as
> >>
> >>      ( c | a | b ) := x
> >>
> >> if you prefer.
> >>  
> > 
> > Are you sure?
> > It seems to me that you got it backward.
> >   
> 
> The point here is that you can write such a 2-way select on the LHS
> of an assignment. C doesn't allow that unless you wrap it up as a
> pointer expression:
> 
>    *(c ? &a : &b) = x;
> 
> In language like C, the LHS of an assignment is one of four
> categories:
> 
>    A = Y;         // name
>    *X = Y;        // pointer
>    X[i] = Y;      // index
>    X.m = Y;       // member select
> 
> A is a simple variable; X represents a term of any complexity, and Y
> is any expression. (In C, the middle two are really the same thing.)
> 
> Some languages allow extra things on the LHS, but in C they can be 
> emulated by transforming the term to a pointer operation. In the same
> it can emulate pass-by-reference (which objects which are not arrays!)

Got it.
Thank you.