Return true if the specified lhs nullable object is ordered before the specified rhs nullable object or lhs and rhs have the same value, and false otherwise. (See operator< and operator==.) Note that this operator returns *lhs <= *rhs when both operands are of NullableValue type and have a value. Also note that this function will fail to compile if LHS_TYPE and RHS_TYPE are not compatible.
Declared in <bdlb_nullablevalue.h>
template<
class LHS_TYPE,
class RHS_TYPE>
bool
operator<=(
NullableValue<LHS_TYPE> const& lhs,
NullableValue<RHS_TYPE> const& rhs)
requires requires {
{ *lhs <= *rhs } -> NullableValue_ConvertibleToBool;
};