Re: [Boost-users] [traits/function_types/generic] Can F be called with {a0, ..., aN}?

Subject: Re: [Boost-users] [traits/function_types/generic] Can F be called with {a0, ..., aN}?
From: Rutger ter Borg (rutger_at_[hidden])
Date: 2010-03-03 04:33:29

Jesse Perla wrote:

> Not sure if this is what you want, but I was pointed to the following
> previously:
> 
http://www.boost.org/doc/libs/1_42_0/doc/html/proto/appendices.html#boost_proto.ap
> pendices.implementation.function_arity
> 

Exactly what I was looking for! I knew there had to be some nifty trick.. 
Thanks!

> This works for most function objects, but not for function pointers.  To
> implement those, I ended up doing a dispatch and determining if the
> arguments were convertible.

Please find attached my take on it. It should work for function pointers, 
function references, member function pointers, and function objects.

Perhaps we can shave it up a bit further and propose to type_traits lib or 
the like..

Cheers,

Rutger