Locale invariant guarantee of boost::lexical_cast<>

Question

I\'m using boost::lexical_cast(double) for converting doubles to string, generating JSON serialized byte stream, that is (on remote side) par

Answer 1

Can I force the boost::lexical_cast<> not to be aware of locales?

No, I don't think that is possible. The best you can do is call

std::locale::global(std::locale::classic());

to set the global locale to the "C" locale as boost::lexical_cast relies on the global locale. However, the problem is if somewhere else in the code the global locale is set to something else before calling boost::lexical_cast, then you still have the same problem. Therefore, a robust solution would be imbue a stringstream like so, and you can be always sure that this works:

std::ostringstream oss;
oss.imbue(std::locale::classic());
oss.precision(std::numeric_limits::digits10);
oss << 0.15784465;