Re: [boost] is_lexical_convertible

2014-11-23 23:54 GMT+04:00 endight . :

Is there something like `boost::is_lexical_convertible` (like `boost::is_convertible`)?

There is a runtime function boost::conversion::try_lexical_convert, that does not throw and returns true if conversion succeeded. If compile time trait is required, then something like the following would work in most cases (not tested): template struct is_lexical_convertible: boost::mpl::bool_< (boost::has_left_shift< std::basic_ostream< char >, From >::value && boost::has_right_shift< std::basic_istream< char >, To >::value ) || (boost::has_left_shift< std::basic_ostream< wchar_t >, From >::value && boost::has_right_shift< std::basic_istream< wchar_t >, To >::value )

{};

-- Best regards, Antony Polukhin