Sorry about being pedantic. Thinking about the default, I don't think I would object against Neil's proposal. Nevertheless a constant such as pi should remain inexact, I think. Robby findler already mentioned read-decimal-as-inexact. Jos
> -----Original Message----- > From: Stephen Bloch [mailto:[email protected]] > Sent: 23 July 2010 12:31 > To: [email protected]; [email protected]; > [email protected] > Subject: Re: [racket] read of numbers with decimal point > default toexact? > > >>> "Jos Koot" <[email protected]> 07/23/10 5:24 AM >>> > >> (/ (read (open-input-string "#e5.55")) #e1.11) > > >> 5.55 and 1.11 are read as inexact reals, which are > flonums. In fact > >> in Racket all reals are rationals. > >> There is good reason to distinguish exact reals from inexact ones, > >> because arithmetic operations on flonums usually are much faster. > > I think Neil understands the above perfectly well; as I read > it, his suggestion was that, *by default*, the Racket reader > should choose correctness over efficiency, while allowing the > programmer to choose efficiency (via exact->inexact) if (s)he wishes. > > Stephen Bloch _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
