Return whether the left-hand operand is before or equal to the right.
Declared in <bslstl_optional.h>
template<
class t_LHS_TYPE,
class t_RHS_TYPE>
constexpr
bool
operator<=(
bsl::optional<t_LHS_TYPE> const& lhs,
bsl::optional<t_RHS_TYPE> const& rhs);Return true if the specified lhs optional object is ordered before the specified rhs optional object or if lhs and rhs have the same value, and false otherwise. (See operator< and operator==.) This function can be called in constant expressions only if neither t_LHS_TYPE nor t_RHS_TYPE is allocator-aware.
true if lhs is ordered before or equal to rhs, and false otherwise
| Name | Description |
|---|---|
| lhs | left-hand operand |
| rhs | right-hand operand |