Or you defined (struct url ...)
somewhere :-) On Oct 23, 2013, at 6:31 PM, Jay McCarthy <jay.mccar...@gmail.com> wrote: > Here are two ideas. > > 1) You simply have an old use of the original net/url. When #<url> is > printed, it uses the symbolic name and you can't really figure out > what the underlying code came from. I would do a grep to make sure > this is not the case. > > 2) You are using namespaces somewhere and actually have two instances > of the same module somewhere where a value produced by copy 1 is going > to copy 2. This is possible with the Web server if you don't set up > the servlet namespace properly: > > http://docs.racket-lang.org/web-server-internal/dispatch-servlets.html#(part._namespace) > > On Wed, Oct 23, 2013 at 4:25 PM, Erik Pearson <e...@adaptations.com> wrote: >> Excuse my poor experience with contracts, this is probably an easy one. >> >> I'm using a copy of net/url and have a strange problem. The copied library >> is working fine in general, but this problem cropped up today: >> >> struct:exn:fail:contract:blame url-port: contract violation >> expected: url? >> given: #<url> >> in: the 1st argument of >> (-> url? (or/c #f number?)) >> contract from: >> /home/epearson/work/racket/github/adaptnet/url-structs.rkt >> blaming: /home/epearson/work/racket/github/racqueb/httpc.rkt >> at: /home/epearson/work/racket/github/adaptnet/url-structs.rkt:4.28 >> >> The error is thrown in my usage of url-port which is being passed a >> perfectly good url struct object. The file is requiring the copied >> url-structs. If I play with the function that is being blamed in httpc.rkt >> via the repl in dr racket, this specific error is not thrown. The call to >> (url-port url) succeeds without throwing this contract exception. >> >> From my primitive understanding, I'm flummoxed: Why is a #<url> not a url? >> >> I suspected that there may have been a leftover require of net/url confusing >> things, but I can't find any in my code. >> >> Using racket head from github 5.90.0.9--2013-10-20(d6610289/d) >> >> Help! >> >> Thanks, >> Erik. >> >> >> >> ____________________ >> Racket Users list: >> http://lists.racket-lang.org/users >> > > > > -- > Jay McCarthy <j...@cs.byu.edu> > Assistant Professor / Brigham Young University > http://faculty.cs.byu.edu/~jay > > "The glory of God is Intelligence" - D&C 93 > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
