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From: "Anders Wirzenius" <anders.wirzenius@pp.qnet.fi>
Newsgroups: comp.lang.ada
References: <3A16A4D5.CE941970@t-online.de> <8v90vm$j5f$1@nnrp1.deja.com>
 <WE7S5.239$rj6.8595@read2.inet.fi> <8vbfns$do2$1@nnrp1.deja.com>
Subject: Re: string operations
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Date: Tue, 21 Nov 2000 06:30:43 GMT
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"Robert Dewar" <robert_dewar@my-deja.com> wrote in message
news:8vbfns$do2$1@nnrp1.deja.com...
> In article <WE7S5.239$rj6.8595@read2.inet.fi>,
>   "Anders Wirzenius" <anders.wirzenius@pp.qnet.fi> wrote:
> > To me the example would have been even more revealing if
> > the Put statement had been written
> > Put(Character'Val(Character'Pos ('0') + N mod 10));
>
>
> Odd ... addition is after all commutative, can you explain why
> in this case a+b is clearer than b+a
>
> I personally prefer the form I had, because from an algorithmic
> point of view it is N mod 10 that is important, and
> the Character'Pos is a minor detail for keeping the types
> right ...

Ok. As i wrote, the example deals with both the algoritm of recursion and
the string handling.
I just emphasized the string handling more than as "a minor detail".  :-)

By the way. I hope miss Margit played a little with the example, as I did,
and switched the order of the statements in the procedure.

Anders