Orders two optionals with less-than-or-equal.
Declared in <beman/optional/optional.hpp>
template<
typename T,
typename U>
constexpr
bool
operator<=(
optional<T> const& lhs,
optional<U> const& rhs)
requires detail::optional_le_rel<T, U>;true if lhs does not order after rhs.
| Name | Description |
|---|---|
| lhs | The left-hand optional. |
| rhs | The right-hand optional. |