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From: Joel de Guzman (joel_at_[hidden])
Date: 2006-05-05 06:35:14

David Abrahams wrote:
> David Abrahams <dave_at_[hidden]> writes:
>> I object to this policy:
>> Unless otherwise noted, components are in namespace
>> boost::fusion. For the sake of simplicity, code in this quick start
>> implies using directives for the fusion components we will be using.
>> because it is utterly ambiguous whether some of these functions are
>> supposed to be called without qualification and found via ADL or not.


> I also note in fusion's tests, constructs like this:
> void test()
> {
> using namespace boost::fusion;
> using namespace boost;
> { // Testing deref, next, prior, begin, end
> char const* s = "Hello";
> typedef FUSION_SEQUENCE<int, char, double, char const*> seq_type;
> seq_type v(1, 'x', 3.3, s);
> result_of::begin<seq_type>::type i(v);
> ^^^^^^^^^
> which might (depending on whether ADL is intended) fail to test some
> important things in the library, and are certain to fail compilation
> once boost/utility/result_of.hpp gets included by a few more boost
> headers.

Right. Ok, noted.


Joel de Guzman

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