Added bytes() method to File.

patches from today you can write something like this:

  io.File("/etc/passwd").bytes grouped 512 map (_.sum) mkString ", "

  res1: String = 45481, 46001, 45110, 45559, 45967, 29543

1 files changed, 12 insertions, 1 deletions

diff --git a/src/library/scala/io/File.scala b/src/library/scala/io/File.scala
index bf64ec35c6..6c15152921 100644
--- a/src/library/scala/io/File.scala
+++ b/src/library/scala/io/File.scala
@@ -10,7 +10,9 @@
 
 package scala.io
 
-import java.io.{ FileInputStream, FileOutputStream, BufferedReader, BufferedWriter, InputStreamReader, OutputStreamWriter, File => JFile }
+import java.io.{
+  FileInputStream, FileOutputStream, BufferedReader, BufferedWriter, InputStreamReader, OutputStreamWriter,
+  BufferedInputStream, File => JFile }
 import collection.Traversable
 
 object File
@@ -42,6 +44,15 @@ class File(val file: JFile)(implicit val codec: Codec = Codec.default) extends c
    */
   def lines(): Iterator[String] = toSource().getLines()
 
+  /** Convenience function for iterating over the bytes in a file.
+   *  Note they are delivered as Ints as they come from the read() call,
+   *  you can map (_.toByte) if you would really prefer Bytes.
+   */
+  def bytes(): Iterator[Int] = {
+    val in = new BufferedInputStream(inputStream())
+    Iterator continually in.read() takeWhile (_ != -1)
+  }
+
   /** Convenience function to import entire file into a String.
    */
   def slurp() = toSource().mkString