On Fri, Apr 19, 2013 at 5:44 PM, Kejia柯嘉 <w.ke...@gmail.com> wrote: > Hi all, > > In DrRacket, why is there an extra empty string (`[]`between 0s) in > the list:`'("" "0" "" "0")`. This generates `([]0[][]0)`, instead of > `([]0[]0)`.
Unfortunately, the question here is ambiguous. What are you trying to do? Can you show us the code you are using to distinguish the empty string? What expression are you trying to evaluate such that you get this list in the first place? ____________________ Racket Users list: http://lists.racket-lang.org/users