Dear all, I am new to boost and tried to use the Tokenizer lib. But I have a problem. When I initialize a tokenizer object in a loop and tokenize that, it is ok on the first iteration. But on the second and subsequent iterations, even if I try to initialize the object with some different string, the object always tokenizes the first initialization. So I see that I have to reset the tokenizer object at each iteration. But I could not understand how to do this from the tokenizer man pages. Here is some code : // define tokenizer and separator typedef boost::tokenizer<boost::char_separator<char> > tokenizer; boost::char_separator<char> sep(" = "); .. . . //initialize and use in a loop while(getline(inFile,readLine)){ //skip empty lines for count operation if(!readLine.empty()){ // each line is tokenized tokenizer tokens(readLine, sep); !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!<====== // tokens are pushed on a vector for (tokenizer::iterator tok_iter = tokens.begin(); tok_iter != tokens.end(); ++tok_iter) lineTokens.push_back(*tok_iter); // lineTokens hold the tokens // check if the configuration file is valid by the count // function of the set if(configVars.count(lineTokens[0])==1){ // means existent so this is valid // assign the read value to the right class data member switch(line_count){ // switch can be extended depending on the configuration file // decide on the line number of the configuration file case 0:// line 1 vlInputFileName=lineTokens[1]; break; case 1:// line 2 vlProjectFileName=lineTokens[1]; break; case 2:// line 3 vlcatvbsFileName=lineTokens[1]; break; case 3:// line 4 vlVbModuleName=lineTokens[1]; break; case 4:// line 5 pathToVLProjectFile=lineTokens[1]; break; // case lines can be added here // ... default: ; break; } } else throw std::runtime_error("The configuration file variable(s) are not valid!"); // clear the line for the next operation readLine.clear(); line_count+=1; // I should reset tokenizer object but I could not do <========================= Reset tokenizer after each iteration Your help is very much appreciated Best regards, Umut