Boost C++ Libraries

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Detailed semantics

template <class CharType, class CharTrait, class T>
    std::basic_ostream<CharType, CharTrait>&
    operator<<(std::basic_ostream<CharType, CharTrait>& out, optional<T> const& v);

space

template <class CharType, class CharTrait, class T>
    std::basic_ostream<CharType, CharTrait>&
    operator<<(std::basic_ostream<CharType, CharTrait>& out, none_t);

space

template <class CharType, class CharTrait, class T>
    std::basic_ostream<CharType, CharTrait>&
    operator>>(std::basic_istream<CharType, CharTrait>& in, optional<T>& v);


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