Brain Gymnastics: Programming Language Keyword Abuse

To get to know a language a little better, this is a fun way to spend an hour.

Simply try and use all the keywords of a language of choice. Then try to reduce the code to contain each keyword as few times as possible. Also, try to remove as much as possible that isn't a keyword.

The code should run, and all paths should be executed.

This is my Javascript snippet containing all keywords only once (except "this" which occurs twice). Only one non-keyword is used -- the variable "e".

Have fun!

    try {
        do { var e; continue } while (void delete typeof null in undefined)
    } catch(e) {
        with(e)
            if ((function(){
                for (;;) break;
                switch (true instanceof this){
                    case false:
                    default: throw new this
                }
                return
            })());
            else;
    } finally {}