}
	return n, err
}

// buffered input and output

// ReadWriter stores pointers to a [Reader] and a [Writer].
// It implements [io.ReadWriter].
type ReadWriter struct {
	*Reader
	*Writer
}

// NewReadWriter allocates a new [ReadWriter] that dispatches to r and w.
func NewReadWriter(r *Reader, w *Writer) *ReadWriter {
	return &ReadWriter{r, w}

pkg bufio, method (*Writer) AvailableBuffer() []uint8
pkg bufio, method (ReadWriter) AvailableBuffer() []uint8
pkg bytes, func Cut([]uint8, []uint8) ([]uint8, []uint8, bool)
pkg bytes, func Title //deprecated
pkg crypto/tls, method (*Conn) NetConn() net.Conn
pkg crypto/tls, type Config struct, PreferServerCipherSuites //deprecated
pkg crypto/x509, method (*CertPool) Subjects //deprecated
pkg debug/buildinfo, func Read(io.ReaderAt) (*debug.BuildInfo, error)

pkg archive/zip, method (*Writer) SetOffset(int64)
pkg bufio, method (*Reader) Discard(int) (int, error)
pkg bufio, method (ReadWriter) Discard(int) (int, error)
pkg bytes, func LastIndexByte([]uint8, uint8) int
pkg bytes, method (*Buffer) Cap() int
pkg bytes, method (*Reader) Size() int64
pkg crypto, const SHA512_224 = 14
pkg crypto, const SHA512_224 Hash
pkg crypto, const SHA512_256 = 15
pkg crypto, const SHA512_256 Hash

}

type Writer interface {
	Write(p []byte) (n int, err error)
	Close() error
}

// ReadWriter's methods are Read, Write, and Close.
type ReadWriter interface {
	Reader  // includes methods of Reader in ReadWriter's method set
	Writer  // includes methods of Writer in ReadWriter's method set
}
</pre>

<p>
A <i>union</i> of method sets contains the (exported and non-exported)

pkg bufio, method (ReadWriter) Available() int
pkg bufio, method (ReadWriter) Flush() error
pkg bufio, method (ReadWriter) Peek(int) ([]uint8, error)
pkg bufio, method (ReadWriter) Read([]uint8) (int, error)
pkg bufio, method (ReadWriter) ReadByte() (uint8, error)
pkg bufio, method (ReadWriter) ReadBytes(uint8) ([]uint8, error)
pkg bufio, method (ReadWriter) ReadLine() ([]uint8, bool, error)

}

type Writer interface {
	Write(p []byte) (n int, err error)
	Close() error
}

// ReadWriter's methods are Read, Write, and Close.
type ReadWriter interface {
	Reader  // includes methods of Reader in ReadWriter's method set
	Writer  // includes methods of Writer in ReadWriter's method set
}
</pre>

<p>
When embedding interfaces, methods with the

pkg net/http/httputil, type ReverseProxy struct, Rewrite func(*ProxyRequest) #53002
pkg net/http, method (*ResponseController) Flush() error #54136
pkg net/http, method (*ResponseController) Hijack() (net.Conn, *bufio.ReadWriter, error) #54136
pkg net/http, method (*ResponseController) SetReadDeadline(time.Time) error #54136
pkg net/http, method (*ResponseController) SetWriteDeadline(time.Time) error #54136

pkg bufio, method (*Scanner) Split(SplitFunc)
pkg bufio, method (*Scanner) Text() string
pkg bufio, method (*Writer) ReadFrom(io.Reader) (int64, error)
pkg bufio, method (ReadWriter) ReadFrom(io.Reader) (int64, error)
pkg bufio, method (ReadWriter) WriteTo(io.Writer) (int64, error)
pkg bufio, type Scanner struct
pkg bufio, type SplitFunc func([]uint8, bool) (int, []uint8, error)
pkg bufio, var ErrAdvanceTooFar error