On Tue, Sep 4, 2012 at 5:03 PM, Sam Tobin-Hochstadt <[email protected]> wrote: > On Tue, Sep 4, 2012 at 10:57 AM, Pierpaolo Bernardi <[email protected]> > wrote: >> >> What is annoying is that char-numeric? and string->number are not compatible. > > `char-numeric?` and `string->number` would not be "compatible" in the > sense you're thinking of, even with the change you mention. > > For example: > > -> (string->number "+i") > 0+1i > -> (string->number "1#e4") > 100000.0
They would be compatible in the other direction. A string composed of char-numeric? chars would be accepted by string->number. In short, my-char-numeric? is a function that is useful, has been in scheme since the stone age, and nowadays I have to write it myself, and remember to not use char-numeric?, since it is never what I need (and when I'll need the char-numeric? functionality I can get it with char-general-category). (Sorry about the previous duplicate messages. I don't know what's causing them) P. _________________________ Racket Developers list: http://lists.racket-lang.org/dev
