[Boost-users] Re: date_time formatting compilation error

Thanks for your response. I get the same results whatever I try, including with testgreg_wstream.cpp. The only way I've been able to get my code working is to define BOOST_DATE_TIME_NO_WSTRING_CONVERSIONS, and then convert to wchar_t myself. I'm pretty sure my CVS files are up to date, but here's a directory listing (in dd/mm/yyyy format), just in case: 18/02/2004 17:49 5,731 formatters.hpp 15/02/2004 16:17 2,845 formatters_limited.hpp 18/02/2004 17:49 1,006 gregorian.hpp 02/12/2003 15:14 3,107 gregorian_types.hpp 02/12/2003 15:14 1,572 greg_calendar.hpp 12/01/2004 16:42 3,824 greg_date.hpp 02/12/2003 15:14 1,826 greg_day.hpp 02/12/2003 15:14 1,078 greg_day_of_year.hpp 02/12/2003 15:14 922 greg_duration.hpp 01/03/2004 16:58 8,288 greg_facet.hpp 18/02/2004 17:49 2,911 greg_month.hpp 18/02/2004 17:49 1,897 greg_weekday.hpp 02/12/2003 15:14 1,648 greg_year.hpp 02/12/2003 15:14 904 greg_ymd.hpp 01/03/2004 16:58 3,195 parsers.hpp - Keith MacDonald "Jeff Garland" wrote in message news:20040314143154.M74344@crystalclearsoftware.com...

On Sun, 14 Mar 2004 12:27:55 -0000, Keith MacDonald wrote

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I'm trying to convert a gregorian::date to a string, as shown in the following code:

// Build: cl /EHsc /I \CVS\boost dt.cpp #include <iostream> #include int main() { boost::gregorian::date today(2004, boost::gregorian::Mar, 14);

std::cout << today << std::endl; return 0; }

This definately should work. What happens if you do std::cout << to_simple_string(today) << std::endl; or std::wcout << to_simple_wstring(today) << std::endl;

...

When I compile it with Visual C++ 7.1, using Boost from CVS head,

Are you positive about this? Changes to support wide streaming went in a couple weeks back. Seems like maybe you don't have all of that change.

...

I get the following error:

\CVS\boost\boost\lexical_cast.hpp(150) : error C2679: binary '>>' : no operator found which takes a right-hand operand of type 'boost::date_time::date_formatter ::string_type' (or there is no acceptable conversion) with [ date_type=boost::gregorian::date, format_type=boost::date_time::simple_format, charT=wchar_t ]

The same thing happens when using to_simple_string and to_simple_string_type<char>, rather than operator<<. I actually want the result as a basic_string, but all variations produce this same error. What am I doing wrong?

I really don't know. Can you try running the regression tests in your environment? In particular I'm interested in

libs/date_time/test/gregorian/testgreg_wstream.cpp

Anyway, judging from the regression tests this should be working for you...

Jeff