On Thu, Jun 9, 2011 at 8:34 AM, Marijn <hk...@gentoo.org> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Thanks Matthias, > > On 06/09/11 16:34, Matthias Felleisen wrote: >> >> (1) To create cyclic structs you need mutability in our world. [gensym is 0 >> assignments, cyclic structs is 1 assignment, and state is N assignments.] >> >> (2) I think the failure should come earlier when a struct isn't mutable. If >> you agree, you can try to request a feature change. > > I agree and would be happy if this behavior was changed. > > So any idea as to why my custom-write doesn't work correctly? AFAICT the > code should work, so either I screwed up or misunderstood something or > this is a bug.
You aren't printing to the provided port, but to stdout. The printer is called multiple times to detect cycles, leading to the behavior you see. Providing `p' as the port argument to `write' or `display' should fix the problem. -- sam th sa...@ccs.neu.edu _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
