[C++] Your own string spliter

Boost Solution : 

string line("test\ttest2\ttest3");
vector<string> strs;
boost::split(strs,line,boost::is_any_of("\t"));

Without boost : 

1

string text = "you are so belle";

vector<string> results;

  

istringstream iss(text);

copy(istream_iterator<string>(iss),

     istream_iterator<string>(),

     (back_inserter(results)));

2

This is one solution but not effective : how to split with other symble? (, ; / ...)
we need to redefine the >> operator :

istream& operator>>(istream& is, string& output) {    // ...does lots of things... }

But we cannot override this method! (why ? ) So , why not to create another method who takes MyString but not string:

class Mystring : public std::string

{};

and then we can override our >> operator :

istream& operator>>(istream& is, MyString& output)

{

   getline(is, output, ','); // we can split by ","

   return is;

}

3

 can we do better ?
Yes ! is that effective to override >> operator for every symble you want to split with ?
Solution is Template :

template<char delimiter>

class Mystring: public std::string

{};

-------------------------------

istream& operator>>(istream& is, Mystring<char delimiter>& output)

{

   getline(is, output, delimiter);

   return is;

}




--------------------------------

string text = "I want to split this into words";

vector<string> results;

  

istringstream iss(text);

copy(istream_iterator<WordDelimitedBy<';'> >(iss),

     istream_iterator<WordDelimitedBy<';'> >(),

     back_inserter(results));







voilà , in term of effecient : the solution boost is better than solution 3>2>1