Added libs/mpl

[SVN r15384]

doc/src/lambda.sgml

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+<!-- ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| section -->
+<section id="lambda">
+<title>Lambda facility</>
+
+<para>
+<firstterm>Lambda expressions</> is a way of inline meta-function composition.
+
+building more complex, more interesting functions from the existing ones. The simplest case of function composition is an operation of taking the result from one function (<literal>g</>) and using that as the argument to another function (<literal>f</>) - <literal>f(g(x))</>. [Talk about run-time &Cxx; facilities to do function composition in &Cxx; - SGI STL <literal>compose1</>/<literal>compose2</>, Boost Compose library, Boost Bind library]
+</>
+
+<para>
+The library provide support for several styles of function composition. The facilities differ in portability, implementation complexity, readability, and performance characteristics.
+</>
+
+<!-- ||||||||||||||||||||||||||||| subsection -->
+<section id="bind.compose">
+<title>compose</>
+
+<programlisting>
+<![CDATA[
+using mpl::placeholders;
+typedef mpl::bind< mpl::make_f2<boost::is_same>,int,_2 > is_int;
+typedef mpl::bind< add_pointer,mpl::bind<add_const,_1> > add_const_pointer;
+]]>
+</>
+
+
+</section>
+
+</section>