operator &<< { associativity precedence } Declarations func &<< <T where T : FixedWidthInteger>(_: T, rhs: T) Declaration func &<<<T where T : FixedWidthInteger>(lhs: T, rhs: T) -> T func &<< <T, U where T : FixedWidthInteger, U : BinaryInteger>(_: T, rhs: U) Declaration func &<<<T, U where T : FixedWidthInteger, U : BinaryInteger>(lhs: T, rhs: U) -> T