1// 2// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh) 3// 4// Distributed under the Boost Software License, Version 1.0. (See 5// accompanying file LICENSE_1_0.txt or copy at 6// http://www.boost.org/LICENSE_1_0.txt) 7// 8 9// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4 filetype=cpp.doxygen 10/*! 11\page faq Frequently Asked Questions 12 13- \anchor faq_bad_cast <b>I try to use some Boost.Locale functions and I get an \c std::bad_cast exception thrown?</b> 14 \n 15 \n 16 \b Answer: You probably try to use incorrect \c std::locale object. All Boost.Locale tools relay on \c std::locale object's facets. 17 The locale object should be generated with \ref boost::locale::generator "generator" class and then passed to 18 the function or alternatively global locale should be set using \c std::locale::global() function such that 19 global locale (and default created one) would have required facets to use. 20- \anchor faq_number <b>I had installed global locale and try to write something to stream but still get wrong output?</b> 21 For example: 22 \code 23 #include <boost/locale.hpp> 24 #include <iostream> 25 int main() 26 { 27 boost::locale::generator gen; 28 std::locale::global(gen("")); 29 std::cout << boost::locale::as::date << std::time(0) << std::endl; 30 } 31 \endcode 32 Prints a number instead of a date. 33 \n 34 \b Answer: You forget to imbue the locale to the stream. Changing the global locale does not affect the 35 locale in existing \c iostream objects. Thus because \c std::out and other global streams were created 36 before changing the global locale Boost.Locale manipulators have no effect. You need to write: 37 \code 38 #include <boost/locale.hpp> 39 #include <iostream> 40 int main() 41 { 42 boost::locale::generator gen; 43 std::locale l = gen(""); 44 std::locale::global(l); 45 std::cout.imbue(l); 46 std::cout << boost::locale::as::date << std::time(0) << std::endl; 47 } 48 \endcode 49 50*/ 51