Re: [boost] [locale] Strange(?) result in example code

Subject: Re: [boost] [locale] Strange(?) result in example code
From: Artyom (artyomtnk_at_[hidden])
Date: 2011-04-15 15:38:56

> #include <boost/locale.hpp>

> 
> #include <iostream>
> //#include  <ctime>
> 
> using namespace boost::locale;
> 
> int  main()
> {
>   generator gen;
>    //std::locale::global(gen("snthsnth")); // no exception
>    std::locale::global(gen("en_US.UTF-8"));
> 
>   double now =  time(0);
> 
>   std::cout << "Today is " << as::date <<  now << std::endl
>             <<  "Current time is " << as::time << now << std::endl
>              << "The current weekday is " <<  as::ftime("%A") << now << 
>std::endl;
> 
>    std::cin.get();
> }
> 
> http://cppcms.sourceforge.net/boost_locale/html/formatting_and_parsing.html
> 
> I  get warnings about converting from time_t to double (which I rather 
>expected)  and then get basic, double formatted output:
> 
> Today is  1.3029e+009
> Current time is 1.3029e+009
> The current weekday is  1.3029e+009

Changing the global locale does not affect the currently created
streams so what you need is to add a line.

std::cout.imbue(std::locale()); // Now global locale imbued to stream as well.

and then

std::cout << as::date << now;

>    //std::locale::global(gen("snthsnth")); // no exception

It is intentional. If fallbacks to some generic locale if it is not found.

It allows you to handle at least messages for non-supported locales
(lets say Epseranto)

Artyom