I think you want with-handlers. (with-handlers ([exn:fail? (lambda (exn) put-specified-default-here)]) try-something-here)
Robby On Sun, Sep 5, 2010 at 7:36 AM, Mark Carter <mcturra2...@yahoo.co.uk> wrote: > I can't get my head around Racket's exception mechanism. I want to say "try > something, and if it fails, return a specified default value". > > This returns the expected result: > (with-exception-handler (lambda (x) "Oops") (/ 1 0)) > because it returns "Oops". However, if I type > (with-exception-handler (lambda (x) "Oops") (/ 6 2)) > then I also get "Oops". It should return 3. > > Is there a simple way to accomplish what I'm looking for? > > > > > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/users > _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
