The procedure `set-get-one/rest' returns a random element from the set and a new set with that element removed. It is used for iterating over a set It is not guaranteed to return the same element if it is called twice on the original set.
The procedure `set-get-one' only returns a random element from the set. This can be used if the programmer simply needs some element from the set and is not iterating over the set. I've implemented these and initiated a pull request. https://github.com/plt/racket/pull/65 This was discussed previously here: http://lists.racket-lang.org/users/archive/2011-September/047919.html -- Dan King College of Computer and Information Science Northeastern University _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
