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+as_function
+===========
+*make sure an object is pushed as a function*
+
+
+.. code-block:: cpp
+	
+	template <typename Sig = sol::function_sig<>, typename... Args>
+	function_argumants<Sig, Args...> as_function ( Args&& ... );
+
+This function serves the purpose of ensuring that a callable struct (like a lambda) can be passed to the ``set( key, value )`` calls on :ref:`sol::table<set-value>` and be treated like a function binding instead of a userdata. It is recommended that one uses the :ref:`sol::table::set_function<set-function>` call instead, but if for some reason one must use ``set``, then ``as_function`` can help ensure a callable struct is handled like a lambda / callable, and not as just a userdata structure.
+
+This class can also make it so usertypes bind variable types as functions to for usertype bindings.
+
+.. literalinclude:: ../../../examples/source/docs/as_function.cpp
+	:linenos:
+
+
+Note that if you actually want a userdata, but you want it to be callable, you simply need to create a :ref:`sol::table::new_usertype<new-usertype>` and then bind the ``"__call"`` metamethod (or just use ``sol::meta_function::call`` :ref:`enumeration<meta_function_enum>`). This may or may not be done automatically for you, depending on whether or not the call operator is overloaded and such.
+
+Here's an example of binding a variable as a function to a usertype:
+
+.. literalinclude:: ../../../examples/source/docs/as_function_usertype_member_variable.cpp
+	:linenos: