From: Gevorg Voskanyan <v_gevorg@yahoo.com> To: boost@lists.boost.org Sent: Mon, April 18, 2011 4:06:59 PM Subject: Re: [boost] [locale] Review
Artyom wrote:
If so please implement following in C correctly:
void delete_values_above_x(double x) { char statement[256]; snprintf(statement,sizeof(statement),"DELETE FROM sometable WHERE x > %f",x); mysql_query(connection,statement) }
When in current locale the decimal point is "," and x=3.14...
You can't do it in reasonable simple way in C. It is design issue of standard C and C++ library.
Artyom
While I agree about the standard C library, what issue does C++ standard library
have here? You can just imbue std::locale::classic() and you are good to go. Am I missing
something?
Calling std::locale::global(some_locale) calls C function setlocale(LC_ALL,some_locale.name()); So even if you can fix C++ code you can't do it for C libraries you may use. Also 99.9% of C++ developers unaware of this issue and almost nobody imbues std::locale::classic() because they just not aware of the problem. Artyom