Hello, dariomt. Friday, February 6, 2009 at 1:02:30 AM Michael Fawcett wrote:
I mean what you can use unqualified ids and usings in most cases without any errors from the compilator _when you use only standard facilities_.
MF> True, but same with C++. If you are only using std namespace, you MF> have no problems. It's only when you bring multiple namespaces into MF> the same scope. e.g. System + XNA, or std + boost. But I see some significant difference. Both std and boost are standard libraries for most C++ programmers. One 'de-jure' and another 'de-facto'. In the near future both STL and boost will contain similar set of most-useful entities. Unlike System and XNA. Friday, February 6, 2009 at 11:46:12 AM dariomt wrote: d> Sergey Sadovnikov <flex_ferrum <at> artberg.ru> writes: d> What about scoped using directive (or using declaration)? d> { // begin code using namespaces d> using namespace std; d> using namespace std::placeholders; d> vector<shared_ptr<SomeClass>> vec; d> for_each(vec.begin(), vec.end(), d> bind(&shared_ptr<SomeClass>::get, _1, d> bind(&SomeClass::foo, _1, 10))); d> } // end code using namespaces d> Explicit, readable, and doesn't affect code outside the braces Just add 'using namespace boost' in this scope for some manner, and you could return to the previous problem: { // begin code using namespaces using namespace std; using namespace std::placeholders; using namespace boost; std::vector<string> path_parts; split(vec, "/1/2/3/4", is_any_of("\\/") ); // string splitter from string algo for_each(path_parts.begin(), path_parts.end(), bind(&SomeClass::RegisterPathPart, _1)); // do something with string parts } // end code using namespaces -- Best Regards, Sergey mailto:flex_ferrum@artberg.ru