Three‐way comparison of an optional against nullopt.

Synopsis

Declared in <beman/optional/optional.hpp>

template<class T>
constexpr
std::strong_ordering
operator<=>(
    optional<T> const& lhs,
    nullopt_t rhs) noexcept;

Return Value

equivalent if lhs is disengaged, otherwise greater.

Parameters

Name

Description

lhs

The optional to compare.

rhs

The nullopt operand.

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