trim string in C++ 11

trim.cpp

#include <iostream>

std::string trim(const std::string & source) {
    std::string s(source);
    s.erase(0,s.find_first_not_of(" \n\r\t"));
    s.erase(s.find_last_not_of(" \n\r\t")+1);
    return s;
}

int main(int argc, const char * argv[]) {
    std::cout << "|" << trim("") << "|" << std::endl;
    std::cout << "|" << trim(" ") << "|" << std::endl;
    std::cout << "|" << trim(" \n") << "|" << std::endl;
    std::cout << "|" << trim("abc") << "|" << std::endl;
    std::cout << "|" << trim(" abc") << "|" << std::endl;
    std::cout << "|" << trim("abc ") << "|" << std::endl;
    std::cout << "|" << trim("   abc  ") << "|" << std::endl;
    return 0;
}

/**
 ||
 ||
 ||
 |abc|
 |abc|
 |abc|
 |abc|
**/

Very nice, thank you for sharing it. Regards, Martin.