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From: davidm@rational.com (David Moore)
Newsgroups: comp.lang.ada
Subject: Re: "Subtract C, add Ada"
Date: 24 Jan 1995 03:35:26 GMT
Organization: Rational Software Corporation
Message-ID: <3g1shu$ksc@rational.rational.com>
References: <3fo2ot$su2@miranda.gmrc.gecm.com> <3fode9$dap@soleil.uvsq.fr>
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Date: 1995-01-24T03:35:26+00:00
List-Id: <comp.lang.ada>

[somebody wrote]
>|> Personally, the lack of this sort of compactness in Ada, and things like
>|> pre- and post-increment/decrement are one of my minor gripes about the
>|> language. OK, its no big thing to write:
>|> 
>|>     P(I) := Q(I);
>|>     I := I + 1;
>|> 
>|> instead of
>|>  
>|>     *p++ = *q++;
>|> 
>|> but I actually *do* find the C representation easier/better etc. (perhaps
>|> I'm wierd?)

>Even if I like C, I think that this ++ is ugly and I'm glad that there isn't such
>a thing in Ada. On the other hand what do you think about the operators += *= ...
>They make thing shorter AND easier to read, a += 5; means exactly add 5 to a.
>So don't you think that these construct have their place in Ada.

The short circuit forms are kind of useful. On the other hand, what does
this do?

int j=0;
int f() {
	return j++;
	}
main () {
int a[10];

....

a[f()]+=1;

Is it the same or different to:   a[f()]=a[f()]+1;   ?

I believe f() gets called once. I would have to get out the standrd to be 100%
sure. 

It is also easy to write abominations like:

 -- search the table

 while (a[i++]!=b);

Whenever you use post-increment in a condition, you always have to stop and
wonder about your post-condition - I find it easier to always write the
loop out in full.


Shorthand forms can be like a bathtub containing two inches of water -
not enough to soak, but enough to drown.