Re: compute ISBN-10, char-to-int?

[Stefan Monnier]

>> I must admit that it seems highly unlikely it will change in the
>> foreseeable future, but it's always a possibility
> More than highly unlikely, I'd say.

Agreed.  But even for those paranoid enough to worry about that,
(+ n ?0) and (- c ?0) should be safe ways to convert between a digit
character and its numerical value.


        Stefan