Writer

method Write(p: Slice<Byte>): tuple of (n: Int64, err: error)

(Int64 n, error err) Write(Slice<Byte> p)

func Write(_ p: Slice<Byte>) -> (Int64, error)

func Write(p Slice<Byte>) tuple of (|name=n| Int64, |name=err| error)

Function Write(p As Slice<Byte>) As Tuple (Of Int64, error)