question: returns an empty interval . any interval where lo > hi is considered empty . concode_field_sep double hi concode_elem_sep double lo concode_field_sep double hi concode_elem_sep boolean interiorContains concode_elem_sep boolean interiorContains concode_elem_sep double getCenter concode_elem_sep double lo concode_elem_sep boolean intersects concode_elem_sep boolean isEmpty concode_elem_sep R1Interval union concode_elem_sep boolean approxEquals concode_elem_sep boolean approxEquals concode_elem_sep R1Interval addPoint concode_elem_sep R1Interval fromPointPair concode_elem_sep boolean contains concode_elem_sep boolean contains concode_elem_sep R1Interval expanded concode_elem_sep int hashCode concode_elem_sep R1Interval intersection concode_elem_sep boolean equals concode_elem_sep double getLength concode_elem_sep String toString concode_elem_sep boolean interiorIntersects concode_elem_sep R1Interval fromPoint
target: R1Interval function ( ) { return new R1Interval ( 1 , 0 ) ; }