id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
2252	Doc or design problem	Dave Abrahams	t_schwinger	" The library is designed to work well with other Boost libraries and uses well-accepted concepts introduced by Boost and TR1.

 Templates that encapsulate boolean or numeric properties define a static member constant called value.

 {{{
 is_function_pointer< bool(*)(int) >::value // == true 
 function_arity< bool(*)(int) >::value // == 1
 }}}

The problem is that having a nested static member constant called value is neither necessary nor sufficient to work with MPL.  The  approach that makes it work the most smoothly would derive the template specialization from an [http://www.boost.org/doc/libs/1_36_0/libs/mpl/doc/refmanual/integral-constant.html: MPL Integral Constant], but at ''least'' you need a nested {{{::type}}} member."	Bugs	new	Boost 1.37.0	function_types	Boost 1.36.0	Problem