import okhttp3.internal.okHttpName
import okhttp3.internal.platform.Platform
import okio.IOException

class RealConnectionPool(
  private val taskRunner: TaskRunner,
  /**
   * The maximum number of idle connections across all addresses.
   * Connections needed to satisfy a [ConnectionPool.AddressPolicy] are not considered idle.
   */
  private val maxIdleConnections: Int,
  keepAliveDuration: Long,

# 关于 FastAPI 版本

**FastAPI** 已在许多应用程序和系统的生产环境中使用。 并且测试覆盖率保持在100%。 但其开发进度仍在快速推进。

经常添加新功能，定期修复错误，并且代码仍在持续改进。

这就是为什么当前版本仍然是`0.x.x`，这反映出每个版本都可能有Breaking changes。 这遵循<a href="https://semver.org/" class="external-link" target="_blank">语义版本控制</a>的约定。

你现在就可以使用 **FastAPI** 创建生产环境应用程序（你可能已经这样做了一段时间），你只需确保使用的版本可以与其余代码正确配合即可。

## 固定你的 `fastapi` 版本

你应该做的第一件事是将你正在使用的 **FastAPI** 版本“固定”到你知道适用于你的应用程序的特定最新版本。

例如，假设你在应用程序中使用版本`0.45.0`。

	}{
		{"", true},
		{"-1", true},
		{"1574812326", false},
		{1574812326, false},
		{int64(1574812326), false},
		{int(1574812326), false},
		{uint(1574812326), false},
		{uint64(1574812326), false},
		{json.Number("1574812326"), false},
		{1574812326.000, false},
		{time.Duration(3) * time.Minute, false},
	}

	for _, testCase := range testCases {
		testCase := testCase
		t.Run("", func(t *testing.T) {

			if err != nil {
				return nil, fmt.Errorf("column %v not found", name)
			}
			// The position count starts at 1.
			idx--
			if idx >= len(r.csvRecord) || idx < 0 {
				// If field index > number of columns, return null
				return sql.FromNull(), nil
			}
			return sql.FromBytes([]byte(r.csvRecord[idx])), nil
		}
		// TODO: Return Missing?
		return nil, fmt.Errorf("column %v not found", name)
	}

   */
  public static <K, V> Builder<K, V> builder() {
    return new Builder<>();
  }

  /**
   * Returns a new builder, expecting the specified number of entries to be added.
   *
   * <p>If {@code expectedSize} is exactly the number of entries added to the builder before {@link
   * Builder#build} is called, the builder is likely to perform better than an unsized {@link
   * #builder()} would have.
   *

  // Note:
  // * the number of additional invocations is not guaranteed to be exactly one.
  // * if additional invocations result in further modifications to the object, webhooks are not guaranteed to be invoked again.
  // * webhooks that use this option may be reordered to minimize the number of additional invocations.

	bufCount := 0
	for _, b := range buf {
		if len(b) > 0 {
			bufCount++
		}
	}
	return bufCount >= p.dataBlocks
}

// Read reads from readers in parallel. Returns p.dataBlocks number of bufs.
func (p *parallelReader) Read(dst [][]byte) ([][]byte, error) {
	newBuf := dst
	if len(dst) != len(p.readers) {
		newBuf = make([][]byte, len(p.readers))
	} else {
		for i := range newBuf {

    // nothing really to assert?
    assertSame(CharStreams.nullWriter(), CharStreams.nullWriter());
  }

  /**
   * Returns a reader wrapping the given reader that only reads half of the maximum number of
   * characters that it could read in read(char[], int, int).
   */
  private static Reader newNonBufferFillingReader(Reader reader) {
    return new FilterReader(reader) {
      @Override

    // nothing really to assert?
    assertSame(CharStreams.nullWriter(), CharStreams.nullWriter());
  }

  /**
   * Returns a reader wrapping the given reader that only reads half of the maximum number of
   * characters that it could read in read(char[], int, int).
   */
  private static Reader newNonBufferFillingReader(Reader reader) {
    return new FilterReader(reader) {
      @Override

    }

    @Override
    public String toString() {
      return iterable.toString();
    }
    // no equals and hashCode; it would break the contract!
  }

  /** Returns the number of elements in {@code iterable}. */
  public static int size(Iterable<?> iterable) {
    return (iterable instanceof Collection)
        ? ((Collection<?>) iterable).size()
        : Iterators.size(iterable.iterator());