func Read(_ p: Slice<Byte>) -> (Int64, error)
Function Read(p As Slice<Byte>) As Tuple (Of Int64, error)
func Write(_ p: Slice<Byte>) -> (Int64, error)
Function Write(p As Slice<Byte>) As Tuple (Of Int64, error)
func WriteString(_ s: string) -> (Int64, error)
Function WriteString(s As string) As Tuple (Of Int64, error)