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diff --git a/src/dotnet-library/scala/Function.scala b/src/dotnet-library/scala/Function.scala
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+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2003-2007, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |                                         **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+// $Id$
+
+
+package scala
+
+/** A module defining utility methods for higher-order functional programming.
+ *
+ *  @author  Martin Odersky
+ *  @version 1.0, 29/11/2006
+ */
+object Function {
+
+  /** Given a sequence of functions <code>f<sub>1</sub></code>, ...,
+   *  <code>f<sub>n</sub></code>, return the function <code>f<sub>1</sub>
+   *  andThen ... andThen f<sub>n</sub></code>.
+   *
+   *  @param fs The given sequence of functions
+   *  @return   ...
+   */
+  def chain[a](fs: Seq[a => a]): a => a = { x => (x /: fs) ((x, f) => f(x)) }
+
+  /** Currying for functions of arity 2. This transforms a function
+   *  of arity 2 into a a unary function returning another unary function.
+   *
+   *  @param f  ...
+   *  @return   ...
+   */
+  def curried[a1, a2, b](f: (a1, a2) => b): a1 => a2 => b = {
+    x1 => x2 => f(x1, x2)
+  }
+
+  /** Currying for functions of arity 3.
+   *
+   *  @param f  ...
+   *  @return   ...
+   */
+  def curried[a1, a2, a3, b](f: (a1, a2, a3) => b): a1 => a2 => a3 => b = {
+    x1 => x2 => x3 => f(x1, x2, x3)
+  }
+
+  /** Currying for functions of arity 4.
+   */
+  def curried[a1, a2, a3, a4, b](f: (a1, a2, a3, a4) => b): a1 => a2 => a3 => a4 => b = {
+    x1 => x2 => x3 => x4 => f(x1, x2, x3, x4)
+  }
+
+  /** Currying for functions of arity 5.
+   */
+  def curried[a1, a2, a3, a4, a5, b](f: (a1, a2, a3, a4, a5) => b): a1 => a2 => a3 => a4 => a5 => b = {
+    x1 => x2 => x3 => x4 => x5 => f(x1, x2, x3, x4, x5)
+  }
+
+  /** Uncurrying for functions of arity 2. This transforms a unary function
+   *  returning another unary function into a function of arity 2.
+   */
+  def uncurried[a1, a2, b](f: a1 => a2 => b): (a1, a2) => b = {
+    (x1, x2) => f(x1)(x2)
+  }
+
+  /** Uncurrying for functions of arity 3.
+   */
+  def uncurried[a1, a2, a3, b](f: a1 => a2 => a3 => b): (a1, a2, a3) => b = {
+    (x1, x2, x3) => f(x1)(x2)(x3)
+  }
+
+  /** Uncurrying for functions of arity 4.
+   */
+  def uncurried[a1, a2, a3, a4, b](f: a1 => a2 => a3 => a4 => b): (a1, a2, a3, a4) => b = {
+    (x1, x2, x3, x4) => f(x1)(x2)(x3)(x4)
+  }
+
+  /** Uncurrying for functions of arity 5.
+   */
+  def uncurried[a1, a2, a3, a4, a5, b](f: a1 => a2 => a3 => a4 => a5 => b): (a1, a2, a3, a4, a5) => b  =  {
+    (x1, x2, x3, x4, x5) => f(x1)(x2)(x3)(x4)(x5)
+  }
+
+  /** Tupling for functions of arity 2. This transforms a function
+   *  of arity 2 into a unary function that takes a pair of arguments.
+   *
+   *  @param f  ...
+   *  @return   ...
+   */
+  def tupled[a1, a2, b](f: (a1, a2) => b): Tuple2[a1, a2] => b = {
+    case Tuple2(x1, x2) => f(x1, x2)
+  }
+
+  /** Tupling for functions of arity 3. This transforms a function
+   *  of arity 3 into a unary function that takes a triple of arguments.
+   */
+  def tupled[a1, a2, a3, b](f: (a1, a2, a3) => b): Tuple3[a1, a2, a3] => b = {
+    case Tuple3(x1, x2, x3) => f(x1, x2, x3)
+  }
+
+  /** Tupling for functions of arity 4. This transforms a function
+   *  of arity 4 into a unary function that takes a 4-tuple of arguments.
+   */
+  def tupled[a1, a2, a3, a4, b](f: (a1, a2, a3, a4) => b): Tuple4[a1, a2, a3, a4] => b = {
+    case Tuple4(x1, x2, x3, x4) => f(x1, x2, x3, x4)
+  }
+
+  /** Tupling for functions of arity 5. This transforms a function
+   *  of arity 5 into a unary function that takes a 5-tuple of arguments.
+   */
+  def tupled[a1, a2, a3, a4, a5, b](f: (a1, a2, a3, a4, a5) => b): Tuple5[a1, a2, a3, a4, a5] => b = {
+    case Tuple5(x1, x2, x3, x4, x5) => f(x1, x2, x3, x4, x5)
+  }
+
+  /** Un-tupling for functions of arity 2. This transforms a function taking
+   *  a pair of arguments into a binary function which takes each argument separately.
+   */
+  def untupled[a1, a2, b](f: Tuple2[a1, a2] => b): (a1, a2) => b = {
+    (x1, x2) => f(Tuple2(x1, x2))
+  }
+
+  /** Un-tupling for functions of arity 3. This transforms a function taking
+   *  a triple of arguments into a ternary function which takes each argument separately.
+   */
+  def untupled[a1, a2, a3, b](f: Tuple3[a1, a2, a3] => b): (a1, a2, a3) => b = {
+    (x1, x2, x3) => f(Tuple3(x1, x2, x3))
+  }
+
+  /** Un-tupling for functions of arity 4. This transforms a function taking
+   *  a 4-tuple of arguments into a function of arity 4 which takes each argument separately.
+   */
+  def untupled[a1, a2, a3, a4, b](f: Tuple4[a1, a2, a3, a4] => b): (a1, a2, a3, a4) => b = {
+    (x1, x2, x3, x4) => f(Tuple4(x1, x2, x3, x4))
+  }
+
+  /** Un-tupling for functions of arity 5. This transforms a function taking
+   *  a 5-tuple of arguments into a function of arity 5 which takes each argument separately.
+   */
+  def untupled[a1, a2, a3, a4, a5, b](f: Tuple5[a1, a2, a3, a4, a5] => b): (a1, a2, a3, a4, a5) => b = {
+    (x1, x2, x3, x4, x5) => f(Tuple5(x1, x2, x3, x4, x5))
+  }
+}