title: Scala tool similar to Linqpad
body: <p>So I'm a huge fan of LinqPad, but not just for its little LINQ testing but for quick scratchpad development using C# or F# since it adds REPL to C#.  Anyways, I know scala has an interactive windows but is there any sort of lightweight tool similar to LinqPad that will work with Scala?  Or is there some other great, light-weight, tool for prototyping in scala?</p>