rubyish.scala

filesMatching(folder) { (file, dir) =>    // looks alot like a Ruby block
  println(file + ": " + dir)              // multiple statements
  file.endsWith(query) && dir == false
}

~FileMatcher.scala

// experimenting with currying, though not actually a great way to do this

object FileMatcher { 
  def fileList(folder: String) = (new java.io.File(folder)).listFiles
  def filesMatching(folder: String)(matcher: (String, Boolean) => Boolean) = {
    for (file <- fileList(folder); if matcher(file.getName, file.isDirectory))
      yield file
  }
  
  def filesEnding(folder:String, query: String) = {    
    filesMatching(folder) { (file, dir) =>    // looks alot like a Ruby block
      println(file + ": " + dir)              // multiple statements
      file.endsWith(query) && dir == false
    }
  }
  
  def filesContaining(folder:String, query: String) = {
    filesMatching(folder) { _.contains(query) && _ == false } // placeholders
  }
}

// script
for(file <- FileMatcher.filesEnding(".", ".scala"))
  println(file)