go/src/io/multi.go

type eofReader …

func (eofReader) Read([]byte) (int, error) { … }

type multiReader …

func (mr *multiReader) Read(p []byte) (n int, err error) { … }

func (mr *multiReader) WriteTo(w Writer) (sum int64, err error) { … }

func (mr *multiReader) writeToWithBuffer(w Writer, buf []byte) (sum int64, err error) { … }

var _ …

// MultiReader returns a Reader that's the logical concatenation of
// the provided input readers. They're read sequentially. Once all
// inputs have returned EOF, Read will return EOF.  If any of the readers
// return a non-nil, non-EOF error, Read will return that error.
func MultiReader(readers ...Reader) Reader { … }

type multiWriter …

func (t *multiWriter) Write(p []byte) (n int, err error) { … }

var _ …

func (t *multiWriter) WriteString(s string) (n int, err error) { … }

// MultiWriter creates a writer that duplicates its writes to all the
// provided writers, similar to the Unix tee(1) command.
//
// Each write is written to each listed writer, one at a time.
// If a listed writer returns an error, that overall write operation
// stops and returns the error; it does not continue down the list.
func MultiWriter(writers ...Writer) Writer { … }