mrdocs::operator<

Less‐than operators

Synopses

Declared in <mrdocs/ADT/Optional.hpp>

Checks if the left Optional is less than the right Optional. Returns true if the right is engaged and either the left is disengaged or its value is less.

template<
    typename T,
    typename U>
constexpr
/* implementation-defined */
operator<(
    Optional<T> const& lhs,
    Optional<U> const& rhs);

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Checks if the Optional is less than a value. Returns true if the Optional is disengaged or its value is less than rhs.

template<
    typename T,
    typename U>
requires (!detail::isOptionalV<U>)
[[nodiscard]]
constexpr
/* implementation-defined */
operator<(
    Optional<T> const& lhs,
    U const& rhs);

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Checks if a value is less than an engaged Optional. Returns true if the Optional is engaged and lhs is less than its value.

template<
    typename T,
    typename U>
requires (!detail::isOptionalV<T>)
[[nodiscard]]
constexpr
/* implementation-defined */
operator<(
    T const& lhs,
    Optional<U> const& rhs);

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Return Value

true if lhs is less than rhs according to the described rules; otherwise, false.
true if the optional is disengaged or less than rhs; otherwise, false.
true if the optional is engaged and lhs is less than its value; otherwise, false.

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