bsl::operator<=>

Perform a three‐way comparison of the specified value and nullopt; return the result of that comparison. This function can be called in constant expressions only if t_TYPE is not allocator‐aware.

Synopsis

Declared in <bslstl_optional.h>

template<class t_TYPE>
constexpr
std::strong_ordering
operator<=>(
    bsl::optional<t_TYPE> const& value,
    bsl::nullopt_t) noexcept;

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