[Boost-users] boost::trim Am I wrong?

From: Sheng QuanHu (shengqh_at_[hidden])
Date: 2005-06-06 00:17:47

I just write a simple test of trim: 

#include <string>
#include <boost/algorithm/string.hpp>
int main(){ 
    using namespace std; 
    string temp = "  just test "; 
    boost::trim(temp); 
    return 0; 
} 

but it couldn't pass the compile, error was: 
[C++ Error] trim.hpp(233): E2285 Could not find a match for 'detail::trim_end(undefined,undefined,detail::is_classifiedF)' 
[C++ Error] trim.hpp(126): E2285 Could not find a match for 'detail::trim_begin(undefined,undefined,detail::is_classifiedF)' 

but when I move the "using namespace std;" out of main function: 

#include <string>
#include <boost/algorithm/string.hpp>
using namespace std; 
int main(){ 
    string temp = "  just test "; 
    boost::trim(temp); 
    return 0; 
}

I don't know why?