How do I list all files in a subdirectory in scala?

Question

Is there a good \"scala-esque\" (I guess I mean functional) way of recursively listing files in a directory? What about matching a particular pattern?

For example re

Answer 1

I would prefer solution with Streams because you can iterate over infinite file system(Streams are lazy evaluated collections)

import scala.collection.JavaConversions._

def getFileTree(f: File): Stream[File] =
        f #:: (if (f.isDirectory) f.listFiles().toStream.flatMap(getFileTree) 
               else Stream.empty)

Example for searching

getFileTree(new File("c:\\main_dir")).filter(_.getName.endsWith(".scala")).foreach(println)