...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::date_time::fixed_string_to_int — Helper function for parsing fixed length strings into integers.
// In header: <boost/date_time/format_date_parser.hpp> template<typename int_type, typename charT> int_type fixed_string_to_int(std::istreambuf_iterator< charT > & itr, std::istreambuf_iterator< charT > & stream_end, parse_match_result< charT > & mr, unsigned int length);
Will consume 'length' number of characters from stream. Consumed character are transfered to parse_match_result
struct. Returns '-1' if no number can be parsed or incorrect number of digits in stream.