On Apr 30, 2011, at 12:52 AM, nikhil wrote: > What you guys suggest solves the problem of returning multiple values. Since > I havent provided any context, my original problem still exists. Sorry about > that. > > This is what I was trying to do, > > (if (condition?) > (stmt1)) > > (if (condition?) > (stmt2) > (stmt3)) > > In the first if condition(stmt1), I have no else condition. Since this is not > allowed, I used (cond ...)
For conditionals with only one clause, use (when ... ...) or (unless ... ...) > Basically, I dont want to execute an else stmt or return multiple values. I > just want to return "stmt1" if condition satisfies and dont do anything if > false. No returning #<void> or anything. > > Am I making any sense ? if yes, is it possible ? > > What does it mean, to return nothing? 'if' will return the results of one of it's two clauses. However, a when statement will either return the result of it's only clause or something that represents nothing: void. A program can check for the result of void like any other value. rac _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
