Re: [Boost-users] [Fusion, maybe?] Workings of ADL.

On Wed, Sep 8, 2010 at 2:48 PM, Steven Watanabe wrote:

AMDG

Robert Jones wrote:

...

I expected this to work

#include #include

typedef boost::fusion::vector V;

int first( const V & v ) { return at_c<0>( v ); }

but I find I need a "using namespace boost::fusion;". Why isn't this covered by ADL?

When calling a function template with explicit template arguments, ADL is only activated if at least one overload is found by normal lookup.

Thanks for that Steven - could you possibly give me a C++ Standard reference for that? Thx, Rob.