Just another update

Task/Empty-directory/00DESCRIPTION

@@ -1,3 +1,4 @@
 Starting with a path to some directory, determine whether the directory is empty.
 
-An empty directory contains no files nor subdirectories. With [[Unix]] or [[Windows]] systems, every directory contains an entry for “<code>.</code>” and almost every directory contains “<code>..</code>” (except for a root directory); an empty directory contains no other entries.
+An empty directory contains no files nor subdirectories.
+With [[Unix]] or [[Windows]] systems, every directory contains an entry for “<code>.</code>” and almost every directory contains “<code>..</code>” (except for a root directory); an empty directory contains no other entries.

Task/Empty-directory/C-sharp/empty-directory.cs

@@ -0,0 +1,19 @@
+using System;
+using System.IO;
+
+class Program
+{
+    static void Main( string[] args )
+    {
+        foreach ( string dir in args )
+        {
+            Console.WriteLine( "'{0}' {1} empty", dir, IsDirectoryEmpty( dir ) ? "is" : "is not" );
+        }
+    }
+
+    private static bool IsDirectoryEmpty( string dir )
+    {
+        return ( Directory.GetFiles( dir ).Length == 0 &&
+            Directory.GetDirectories( dir ).Length == 0 );
+    }
+}

Task/Empty-directory/Ruby/empty-directory.rb

@@ -0,0 +1 @@
+Dir.entries("testdir").empty?