boost之字符串算法庫

#include <boost/algorithm/string.hpp>
#include <string>
#include <boost/algorithm/string_regex.hpp>
#include <iostream>
using namespace std;
using namespace boost;
bool is_exec_filename(string& filename)
{
        return iends_with(filename,".exe") || iends_with(filename,".com");
}
int main()
{
      string str1(" hello world");
     to_upper(str1);
       string str2;
   cout << to_lower_copy(str1)<<endl;
    cout << str1 << endl;
    trim(str1);
    cout << str1 << endl;
    string filename("a.exe");
    cout<<"a.exe" << (is_exec_filename(filename) ? "is" : "is not") << "exe filename\n";
    string text("thisistest");
    cout <<(all(text, is_lower())?" is lower":" is not lower") << endl;

    //字符串的裁剪
    string str3(" hello world   ");
    cout<<trim_left_copy(str3) << endl;
    cout<<trim_right_copy(str3) << endl;
    trim(str3);
    cout << str3<<endl;

    string phone("0086054487653421");
    cout << trim_left_copy_if(phone,is_any_of("0")) << endl;
    trim_if(phone,is_any_of("0"));
    cout << phone << endl;


    
        return 0;
}