Hi, [keeping the list cc'd]
On Sun 30 May 2010 22:24, No Itisnt <theseaisinh...@gmail.com> writes: >> For example, what would you have Guile do here: >> >> (even? #f) => ? >> (char-whitespace? 42) => ? > > I'd have it raise an error. > >>> The reason it bothers me is because it makes it cumbersome to deal >>> with input from a port. >> >> True; but it's just how it is, I think. The EOF object is not a >> character. > > But it is returned by read-char, unlike the other examples. A fair point. The consistent thing to do would be to make all char-foo? predicates return #f for the EOF object (char<? and friends excluded of course). Ludovic what do you think? One point against such a change is that such programs would not be portable -- at least PLT Scheme^H^HRacket raises errors in these situations, as Guile does. But OTOH Racket folks are not themselves against changes where things make sense, so perhaps this is not a strong argument. Andy -- http://wingolog.org/
