<p>
Note that if there are no read-write or write-write data races on memory location <i>x</i>,
then any read <i>r</i> on <i>x</i> has only one possible <i>W</i>(<i>r</i>):
the single <i>w</i> that immediately precedes it in the happens before order.
</p>

<p>
More generally, it can be shown that any Go program that is data-race-free,
meaning it has no program executions with read-write or write-write data races,

// executes at least one write operation if it is closed.
//
// This can be useful within the context of HTTP. At least
// one write operation must happen to send the HTTP headers
// to the peer.
type WriteOnCloser struct {
	io.Writer
	hasWritten bool
}

func (w *WriteOnCloser) Write(p []byte) (int, error) {
	w.hasWritten = true
	return w.Writer.Write(p)
}

	conn *Conn
	num  byte
	r    io.Reader
	w    io.WriteCloser

	read, write bool
}

// newWebsocketChannel creates a pipe for writing to a websocket. Do not write to this pipe
// prior to the connection being opened. It may be no, half, or full duplex depending on
// read and write.
func newWebsocketChannel(conn *Conn, num byte, read, write bool) *websocketChannel {
	r, w := io.Pipe()

	}

	R := (&edwards25519.Point{}).ScalarBaseMult(r)

	kh := sha512.New()
	if domPrefix != domPrefixPure {
		kh.Write([]byte(domPrefix))
		kh.Write([]byte{byte(len(context))})
		kh.Write([]byte(context))
	}
	kh.Write(R.Bytes())
	kh.Write(publicKey)
	kh.Write(message)
	hramDigest := make([]byte, 0, sha512.Size)
	hramDigest = kh.Sum(hramDigest)

	var b buffer
	b.init(1000)

	var w Writer
	w.Init(&b, minwidth, tabwidth, padding, padchar, flags)

	// write all at once
	title := testname + " (written all at once)"
	b.clear()
	write(t, title, &w, src)
	verify(t, title, &w, &b, src, expected)

	// write byte-by-byte
	title = testname + " (written byte-by-byte)"
	b.clear()
	for i := 0; i < len(src); i++ {
		write(t, title, &w, src[i:i+1])
	}

	assert.Equal(t, expectedHeader, trw.Header(), "")
	// Validate Write() for delegate response writer.
	expectedWrite := []byte("this is a test write string")
	assert.False(t, trw.written, "written field is before Write()")
	_, err := trw.Write(expectedWrite)
	assert.NoError(t, err, "No error expected after Write() on tunneling response writer")

                throw new DictionaryException("Failed to write: " + oldItem + " -> " + item, e);
            }
        }

        public void write(final String line) {
            try {
                writer.write(line);
                writer.write(Constants.LINE_SEPARATOR);
            } catch (final IOException e) {
                throw new DictionaryException("Failed to write: " + line, e);
            }
        }

// Once Write or WriteHeader is called, Hijack returns an error.
// Once Hijack is called, Write, WriteHeader, and Hijack return errors.
type tunnelingResponseWriter struct {
	// w is used to delegate Header(), WriteHeader(), and Write() calls
	w http.ResponseWriter
	// conn is returned from Hijack()
	conn net.Conn
	// mu guards writes
	mu sync.Mutex

// across "api_label" is not expected to equal the ".../write/count" cell value
// because programs can invoke more than one API to save a single SM and
// because the API may error out before successfully writing a SM.
auto* saved_model_write_api = monitoring::Counter<1>::New(
    "/tensorflow/core/saved_model/write/api",
    "The API used to write the SavedModel.", "api_label");

        host: Host,
        private val writer: ScopedFingerprintWriter<ConfigurationCacheFingerprint>
    ) : Sink(host) {
        override fun write(value: ConfigurationCacheFingerprint, trace: PropertyTrace?) {
            writer.write(value, trace)
        }

        fun initScripts(initScripts: List<File>) {
            capturedFiles.addAll(initScripts)
            write(