beman::optional::operator!=

Synopses

Declared in <beman/optional/optional.hpp>

Compares two optionals for inequality.

template<
    typename T,
    typename U>
constexpr
bool
operator!=(
    optional<T> const& lhs,
    optional<U> const& rhs)
requires detail::optional_ne_rel<T, U>;

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Compares an optional against a value for inequality.

template<
    typename T,
    typename U>
constexpr
bool
operator!=(
    optional<T> const& lhs,
    U const& rhs)
requires (!detail::is_optional<U>) && detail::optional_ne_rel<T, U>;

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Compares a value against an optional for inequality.

template<
    typename T,
    typename U>
constexpr
bool
operator!=(
    T const& lhs,
    optional<U> const& rhs)
requires (!detail::is_optional<T>) && detail::optional_ne_rel<T, U>;

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