Re: [Boost-users] [FunctionTypes] function_arity for non-built-ins

On 1/6/2011 12:32 PM, Larry Evans wrote:

On 01/06/11 08:48, Roman Perepelitsa wrote:

...

2011/1/6 Hossein Haerimailto:powerprogman@yahoo.com>

Hi Roman,

> This is actually possible in most cases. Check this nice article by Eric > Niebler: http://www.boost.org/doc/libs/1_45_0/doc/html/proto/appendices.html#boost_pr...

This is beautiful, thanks! :) So, from the description, it seems like this can_be_called guy (or its siblings) is in heavy use for Proto. Does Proto then also port this as a part of its toolbox? Or, is it only for internal use and I'll need to craft my own version of it?

Unfortunately, there's no official boost implementation of can_be_called. You'll have to roll your own version.

Eric's code was used as a basis for a variadic templates implementation of can_be_called which is available here:

http://svn.boost.org/svn/boost/sandbox/variadic_templates/boost/function_typ...

A use is shown here:

http://svn.boost.org/svn/boost/sandbox/variadic_templates/boost/composite_st...

Are you still working on the variadic templates sandbox project ? What is the project meant to do ? It looks like you are using variadic templates for various Boost libraries. I am interested in using variadic templates in a sandbox project in which I am working, so I was interested when I saw your variadic templates library, but there was no explanation or documentation there.