[Boost-users] [DateTime] Functions parsing date/time values from wstring missing?

According to http://www.boost.org/doc/html/date_time/details.html#date_time.changes there have been functions added to Boost.DateTime (between Boost 1.31 to 1.32) to convert date and time classes to wstring. However I can't find any functions to parse date and time values from wstring. There is for example to_iso_extended_wstring() but no from_simple_wstring(). Am I missing something? Boris