infix operator ..< { associativity none precedence 135 } Declarations func ..< <Bound : Comparable>(_: Bound, end: Bound) Returns a half-open interval from start to end. Declaration func ..<<Bound : Comparable>(start: Bound, end: Bound) -> HalfOpenInterval<Bound> func ..< <Pos : ForwardIndexType where Pos : Comparable>(_: Pos, end: Pos) Forms a half-open range that contains start, but not end. Requires: start <= end. Declaration func ..<<Pos : ForwardIndexType where Pos : Comparable>(start: Pos, end: Pos) -> Range<Pos> func ..< <Pos : ForwardIndexType>(_: Pos, maximum: Pos) Forms a half-open range that contains minimum, but not maximum. Declaration func ..<<Pos : ForwardIndexType>(minimum: Pos, maximum: Pos) -> Range<Pos>