分割字符串的比较完美实现（c++，stl）

#include<string>#include<vector>#include<iostream>using namespace std;void Tokenize(const string& str,vector<string>& tokens,const string& delimiters){// Skip delimiters at beginning.string::size_type lastPos = str.find_first_not_of(delimiters, 0);// Find first "non-delimiter".string::size_type pos     = str.find_first_of(delimiters, lastPos);while (string::npos != pos || string::npos != lastPos){// Found a token, add it to the vector.tokens.push_back(str.substr(lastPos, pos - lastPos));// Skip delimiters.  Note the "not_of"lastPos = str.find_first_not_of(delimiters, pos);// Find next "non-delimiter"pos = str.find_first_of(delimiters, lastPos);}}int main(int argc, char *argv[]){string str("====aaa==bbb=ccc=ddd====");vector<string>tokens;Tokenize(str, tokens, "=");for( int i = 0; i < tokens.size() ; i++ ){cout << tokens[i] << endl;}return 0;}