* undefined which (if any) of these modifications will be reflected in the result.
   */
  @Override
  public int size() {
    long sum = 0L;
    for (AtomicInteger value : countMap.values()) {
      sum += value.get();
    }
    return Ints.saturatedCast(sum);
  }

  /*

-ol:before{content:"\f0cb"}.fa-list-ul:before{content:"\f0ca"}.fa-location-arrow:before{content:"\f124"}.fa-lock:before{content:"\f023"}.fa-lock-open:before{content:"\f3c1"}.fa-long-arrow-alt-down:before{content:"\f309"}.fa-long-arrow-alt-left:before{content:"\f30a"}.fa-long-arrow-alt-right:before{content:"\f30b"}.fa-long-arrow-alt-up:before{content:"\f30c"}.fa-low-vision:before{content:"\f2a8"}.fa-luggage-cart:before{content:"\f59d"}.fa-lyft:before{content:"\f3c3"}.fa-magento:before{content:"\f...

    // CONTAINS_VALUE_RETRIES increases, though without locking it is theoretically possible.
    final Segment<K, V, E, S>[] segments = this.segments;
    long last = -1L;
    for (int i = 0; i < CONTAINS_VALUE_RETRIES; i++) {
      long sum = 0L;
      for (Segment<K, V, E, S> segment : segments) {
        // ensure visibility of most recent completed write
        int unused = segment.count; // read-volatile

```Python hl_lines="1  7-13  19"
{!../../docs_src/dataclasses/tutorial002.py!}
```

🎻 🔜 🔁 🗜 Pydantic 🎻.

👉 🌌, 🚮 🔗 🔜 🎦 🆙 🛠️ 🩺 👩‍💻 🔢:

<img src="/img/tutorial/dataclasses/image01.png">

## 🎻 🔁 📊 📊

👆 💪 🌀 `dataclasses` ⏮️ 🎏 🆎 ✍ ⚒ 🐦 📊 📊.

💼, 👆 💪 ✔️ ⚙️ Pydantic ⏬ `dataclasses`. 🖼, 🚥 👆 ✔️ ❌ ⏮️ 🔁 🏗 🛠️ 🧾.

👈 💼, 👆 💪 🎯 💱 🐩 `dataclasses` ⏮️ `pydantic.dataclasses`, ❔ 💧-♻:

  optional bool force = 2;

  // fieldManager is a name associated with the actor or entity
  // that is making these changes. The value must be less than or
  // 128 characters long, and only contain printable characters,
  // as defined by https://golang.org/pkg/unicode/#IsPrint. This
  // field is required.
  optional string fieldManager = 3;
}

    Object writeReplace() {
      return super.writeReplace();
    }

    @J2ktIncompatible // serialization
    private static final long serialVersionUID = 0;
  }

  @J2ktIncompatible // serialization
  private static final long serialVersionUID = 0;

Following are advantages for using temporary credentials:

- Eliminates the need to embed long-term credentials with an application.
- Eliminates the need to provide access to buckets and objects without having to define static credentials.

  // and notAfter fields in the issued certificate to determine the actual duration.
  //
  // The v1.22+ in-tree implementations of the well-known Kubernetes signers will
  // honor this field as long as the requested duration is not greater than the
  // maximum duration they will honor per the --cluster-signing-duration CLI
  // flag to the Kubernetes controller manager.
  //

      while (source!!.read(buffer, 16384) != -1L) {
      }
      source.close()
      buffer.readByteString()
    }
  }

  private fun assertFile(
    prefix: ByteString,
    upstreamSize: Long,
    metadataSize: Int,
    upstream: String?,
    metadata: ByteString?,
  ) {
    val source = file.source().buffer()
    assertThat(source.readByteString(prefix.size.toLong())).isEqualTo(prefix)

  @CanIgnoreReturnValue
  public final Hasher putInt(int i) {
    buffer.putInt(i);
    munchIfFull();
    return this;
  }

  @Override
  @CanIgnoreReturnValue
  public final Hasher putLong(long l) {
    buffer.putLong(l);
    munchIfFull();
    return this;
  }

  @Override
  public final HashCode hash() {
    munch();
    Java8Compatibility.flip(buffer);