I encountered the following error — imagine a function that returns 3.0 instead of just 3.0 as shown example below:
> (split-at-right (range 8) 3.0) split-at-right: contract violation expected: exact-nonnegative-integer? given: 3.0 context...: /Applications/Racket/collects/racket/list.rkt:191:0: split-at-right /Applications/Racket/collects/racket/private/misc.rkt:87:7 The obvious fixes didn't work ... > (split-at-right (range 8) (round 3.0)) split-at-right: contract violation expected: exact-nonnegative-integer? given: 3.0 context...: /Applications/Racket/collects/racket/list.rkt:191:0: split-at-right /Applications/Racket/collects/racket/private/misc.rkt:87:7 > ... and I couldn't find something like real->integer, but inexact->exact came to the rescue: > (split-at-right (range 8) (inexact->exact 3.0)) (split-at-right (range 8) (inexact->exact 3.0)) '(0 1 2 3 4) '(5 6 7) > (split-at-right (range 8) 3.0) split-at-right: contract violation expected: exact-nonnegative-integer? given: 3.0 context...: /Applications/Racket/collects/racket/list.rkt:191:0: split-at-right /Applications/Racket/collects/racket/private/misc.rkt:87:7 > Still, it doesn't seem particularly elegant.
____________________ Racket Users list: http://lists.racket-lang.org/users
