Re: MSVC++ 2005 Express Ed. build error when mixing boost lexical_cast and shared_ptr

Thank you for the standard idiom:

    std::string line ;
    while ( std::getline( s, line ) ) {
        d.push_back( line ) ;
    }

It's very useful to know, and will help make a few areas of my code
more clear and STL like. My old mentor, Mr Wil Evers always taught me
to stay away from raw character pointers (char *). And now you've
shown me how - thank you. Tells you how little I still know about
STL...

You also write:


what does ADL stand for?

C++ is IMHO the most beautiful language out there. It's my favorite
and has taught me a great deal about programming well. But these type
of compiler errors whilst using standard libraries really scare me.
The following doubts enter my mind:
1) am I using a compliant compiler?
2) does the boost library have limitations?
3) am I writing inappropriate code?

These doubts are not a good thing.

My previous post included the share_ptr.hpp, however, I just
discovered that the problem can be reproduced without including this
header.

I have now modified the code slightly. This compiles:

#include <boost/lexical_cast.hpp>
#include <iostream>
#include <vector>
#include <string>

namespace mytest {

  // IF I PLACE: using namespace mytest; - THIS WORKS
  typedef std::vector<std::string> stringvector;

  //--------------------------------------------------------------
  template<class T> std::ostream & operator<<(std::ostream& s, const
std::vector<T> & d) {
    std::copy(d.begin(), d.end(),
std::ostream_iterator<std::string>(s, "\n"));
    return s;
  }
  //--------------------------------------------------------------
  template<class T> std::istream & operator>>(std::istream& s,
std::vector<T> & d) {
    std::string line;
    while (std::getline(s, line)) {
      d.push_back(line);
    }
    return s;
  }
}; // end mytest namespace

// THE TRICK TO GET THIS CODE TO COMPILE
using namespace mytest;

//--------------------------------------------------------------
int main (int argc, char ** argv) {

  mytest::stringvector vecstr1;
  vecstr1.push_back("hi");
  vecstr1.push_back("there");
  std::string str = boost::lexical_cast<std::string>(vecstr1);
  std::cout << str << std::endl;

  return 0;
}

However, if I remove the,

using namespace mytest;

It fails to compile. I have not tried to compile this in gc++ yet.

So, my next question is:
- why does placing the "mytest" namespace into the global namespace
solve this problem?