}

  static void awaitWaiting(Thread t) {
    while (true) {
      Thread.State state = t.getState();
      switch (state) {
        case RUNNABLE:
        case BLOCKED:
          Thread.yield();
          break;
        case WAITING:
          return;
        default:
          throw new AssertionError("unexpected state: " + state);
      }
    }
  }

	if len(p) == 0 {
		// Read(0 bytes) is useless. We expect no such useless
		// calls in this test.
		panic("unexpected call")
	}
	p[0] = byte(b)
	return 1, EOF
}

// This used to yield bytes forever; issue 16795.
func TestMultiReaderSingleByteWithEOF(t *testing.T) {
	got, err := ReadAll(LimitReader(MultiReader(byteAndEOFReader('a'), byteAndEOFReader('b')), 10))
	if err != nil {
		t.Fatal(err)
	}

                                       const int peak_loc) const {
  // All tensors necessarily have their last use before or at the last operator
  // (which is the yield operation of a function), so an unchanged best ==
  // operations_.size() value means that there is no valid configuration.
  int best = operations_.size();

        newStartedThread(
            new CheckedRunnable() {
              @Override
              public void realRun() {
                while (!a.compareAndSet(0, 2.0, 3.0)) {
                  Thread.yield();
                }
              }
            });

    assertTrue(a.compareAndSet(0, 1.0, 2.0));
    awaitTermination(t);
    assertBitEquals(3.0, a.get(0));
  }

	dirPair := p.classifyPairContent(loc, dirEmbed)

	// dirPair is now L, R, or N (no strong type found)

	// the following logical tests are performed out of order compared to
	// the statement of the rules but yield the same results
	if dirPair == ON {
		return // case "d" - nothing to do
	}

	if dirPair != dirEmbed {
		// case "c": strong type found, opposite - check before (c.1)
		dirPair = p.classBeforePair(loc)

	// A response via different Accept encodings (eg: protobuf, json) will
	// yield the same etag. This is okay because Accept is part of the Vary header.
	// Per RFC7231 a client must only cache a response etag pair if the header field
	// matches as indicated by the Vary field. Thus, protobuf and json and other Accept
	// encodings will not be cached as the same response despite having the same etag.

```Python hl_lines="23-29"
{!../../../docs_src/sql_databases_peewee/sql_app/main.py!}
```

Here we have an empty `yield` because we are actually not using the database object directly.

It is connecting to the database and storing the connection data in an internal variable that is independent for each request (using the `contextvars` tricks from above).

        throw new IllegalArgumentException("Trailing high surrogate at end of input");
      }
      // It is possible for this to return null because nextEscapeIndex() may
      // (for performance reasons) yield some false positives but it must never
      // give false negatives.
      char[] escaped = escape(cp);
      int nextIndex = index + (Character.isSupplementaryCodePoint(cp) ? 2 : 1);
      if (escaped != null) {

        throw new IllegalArgumentException("Trailing high surrogate at end of input");
      }
      // It is possible for this to return null because nextEscapeIndex() may
      // (for performance reasons) yield some false positives but it must never
      // give false negatives.
      char[] escaped = escape(cp);
      int nextIndex = index + (Character.isSupplementaryCodePoint(cp) ? 2 : 1);
      if (escaped != null) {

   * Returns a big-endian representation of {@code value} in an 8-element byte array; equivalent to
   * {@code ByteBuffer.allocate(8).putLong(value).array()}. For example, the input value {@code
   * 0x1213141516171819L} would yield the byte array {@code {0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
   * 0x18, 0x19}}.
   *
   * <p>If you need to convert and concatenate several values (possibly even of different types),