At Mon, 10 Oct 2011 10:31:39 -0700 (PDT), michael rice wrote: > > Welcome to DrRacket, version 5.1.3 [3m]. > Language: racket; memory limit: 128 MB. > > (trace next-leaf-generator) > set!: cannot modify a constant: next-leaf-generator
Try adding `(trace next-leaf-generator)' to the program itself, that should work. The interactions window is not part of the program, which is in its own module. Since you can't mutate variables except in the module where they're defined, you can't add tracing from the interactions window. Vincent _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
