Also, if you want nested iteration, use `for*'. Vincent
At Fri, 30 Dec 2011 17:55:12 -0500, Nadeem Abdul Hamid wrote: > > The for form iterates by drawing an element from each sequence; if any > sequence is empty, then the iteration stops. So this: > > (for ([i (in-range 2 4)] > [j (in-range 1 2)]) > (printf "i = ~s j = ~s\n" i j)) > > produces > > i = 2 j = 1 > > at which point, the j sequence is now empty, so the entire iteration stops. > > --- nadeem > > > On Fri, Dec 30, 2011 at 5:49 PM, Charles Turner <chtu...@gmail.com> wrote: > > I'm noticing some unexpected behaviour with in-range: > > > >> (for ([i (in-range 2 4)]) > > (printf "i = ~s\n" i)) > > i = 2 > > i = 3 > > > > that works as expected, but: > > > >> (for ([i (in-range 2 4)] > > [j (in-range 1 2)]) > > (printf "i = ~s\n" i)) > > i = 2 > > > > why isn't '3' being picked up in the second example? > > > > Thanks, > > Charles. > > ____________________ > > Racket Users list: > > http://lists.racket-lang.org/users > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
