Hello, I'm using boost::tokenizer to do some simple parsing of data file in a format specified by the following rules: - One record of several fields in a single line - Adjacent data fields in a record separated by space char's(space or tab), with or without "," - String without space(s), with or without quotation marks - String with space(s), with quotation marks One example of a 4-field-per-record file is like: "string 2" 3 4 5 4.3 "String", 2, 3.04 4 3 AnyOtherText, 2, 3.04 4 3 I am using the following code to get a line at first, supposing 'input' has the contents of the data file: typedef boost::tokenizer<boost::char_separator<char> > tokenizer; boost::char_separator<char> sep("\n", " "); tokenizer tokens(input, sep); for(tokenizer::iterator beg=tokens.begin(); beg!=tokens.end(); ++beg) { } Then for each *beg, I parse each line with this typedef boost::tokenizer<boost::char_separator<char> > tokenizer; tokenizer tokens (*beg, boost::char_separator<char>(", ")); tokenizer::iterator it= tokens.begin(); But I cannot get the expected output. And, at the mean time, I found the doc of boost::tokenizer quite slim and not easy to find the information that I need. Does anybody else have the same feeling, or, is the fact that nobody is actually using it but turning to any other better lib? Thanks for any help. B/Rgds Max