From: "Arkadiy Vertleyb" <vertleyb@hotmail.com>
"Maxim Yegorushkin" <e-maxim@yandex.ru> wrote
In generic code lexical_cast<> is sometimes used as a cast to the same type. I would like to shortcut this rather then going all the way by writing it to a stream and reading back. In my code I use the following workaround:
template<class U, class T> inline typename boost::disable_if<boost::is_same<T, U>, U>::type lexical_cast(T const& t) { return boost::lexical_cast<U>(t); }
template<class T> inline T const& lexical_cast(T const& t) { return t; }
Does it make any sense to put it in lexical_cast.hpp?
Unless somebody already started using it to get the first token from a string, like:
boost::lexical_cast<string>(string("I am a string with spaces")); // now returns just "I"
lexical_cast doesn't work like that, anymore. Now, it handles strings with whitespace in them, so the above would have identical semantics to Maxim's suggestion. I've mailed Kevlin Henney about this thread (as I don't think he follows the Boost list). Regards, Terje