// // Copyright (c) 2009-2011 Artyom Beilis (Tonkikh) // // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt /*! \page faq Frequently Asked Questions - \anchor faq_bad_cast Some Boost.Locale functions throw \c std::bad_cast exception? \n \n \b Answer: You probably try to use an incorrect \c std::locale object. All Boost.Locale tools rely on \c std::locale object's facets. The locale object should be generated with the \ref boost::locale::generator "generator" class and then passed to the function or alternatively global locale should be set using the \c std::locale::global() function such that global locale (and default created one) would have the required facets. - \anchor faq_number I have installed global locale, but when I try to write something to a stream I still get the wrong output? For example: \code #include #include int main() { boost::locale::generator gen; std::locale::global(gen("")); std::cout << boost::locale::as::date << std::time(0) << std::endl; } \endcode Prints a number instead of a date. \n \b Answer: You forget to imbue the locale to the stream. Changing the global locale does not affect the locale in existing \c iostream objects. Thus, because \c std::out and other global streams were created before changing the global locale, Boost.Locale manipulators have no effect. You need to write: \code #include #include int main() { boost::locale::generator gen; std::locale l = gen(""); std::locale::global(l); std::cout.imbue(l); std::cout << boost::locale::as::date << std::time(0) << std::endl; } \endcode */