* @author Doug Lea
 */
final class LongAdder extends Striped64 implements Serializable, LongAddable {
  @GwtIncompatible @J2ktIncompatible   private static final long serialVersionUID = 7249069246863182397L;

  /** Version of plus for use in retryUpdate */
  @Override
  final long fn(long v, long x) {
    return v + x;
  }

  /** Creates a new adder with initial sum of zero. */
  public LongAdder() {}

  /**

## Version 1.2.0

_2013-08-11_

 *  New APIs on OkHttpClient to set default timeouts for connect and read.
 *  Fix bug when caching SPDY responses.
 *  Fix a bug with SPDY plus half-closed streams. (thanks kwuollett)
 *  Fix a bug in `Content-Length` reporting for gzipped streams in the Apache
    HTTP client adapter. (thanks kwuollett)
 *  Work around the Alcatel `getByInetAddress` bug (thanks k.kocel)

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///

## Guide d'utilisation avancé { #advanced-user-guide }

Il existe également un **Guide d'utilisation avancé** que vous pouvez lire plus tard après ce **Tutoriel - Guide d'utilisation**.

Le **Guide d'utilisation avancé**, qui s'appuie sur cette base, utilise les mêmes concepts et vous apprend quelques fonctionnalités supplémentaires.

     */
    private val SINGLE_INET_ADDRESS_DNS =
      Dns { hostname ->
        val addresses = Dns.SYSTEM.lookup(hostname)
        listOf(addresses[0])
      }

    private operator fun Throwable?.plus(throwable: Throwable): Throwable {
      if (this != null) {
        addSuppressed(throwable)
        return this
      }
      return throwable
    }
  }

  }

  protected void expectUnchanged() {
    expectContents(getOrderedElements());
  }

  /**
   * Asserts that the collection under test contains exactly the elements it was initialized with
   * plus the given elements, according to {@link #expectContents(java.util.Collection)}. In other
   * words, for the default {@code expectContents()} implementation, the number of occurrences of

old_dict = {
    "old key": "old value",
    "second old key": "second old value",
}
new_dict = {**old_dict, "new key": "new value"}
```

Here, `new_dict` will contain all the key-value pairs from `old_dict` plus the new key-value pair:

```Python
{
    "old key": "old value",
    "second old key": "second old value",
    "new key": "new value",
}
```

```Python
old_dict = {
    "old key": "old value",
    "second old key": "second old value",
}
new_dict = {**old_dict, "new key": "new value"}
```

Hier wird `new_dict` alle Schlüssel-Wert-Paare von `old_dict` plus das neue Schlüssel-Wert-Paar enthalten:

```Python
{
    "old key": "old value",
    "second old key": "second old value",
    "new key": "new value",
}
```

SsKhjbClVGW5FFY+XMVdYw20k705To0o+i0dDr8rPURXa43G2zC1r0rzEIB3IZPE
OdHOim9+
-----END PRIVATE KEY-----
```

Recommendations
---------------

Typically servers need a held certificate plus a chain of intermediates. Servers only need the
private key for their own certificate. The chain served by a server doesn't need the root
certificate.

        UnsignedLong bUnsigned = UnsignedLong.fromLongBits(b);
        long expected = aUnsigned.bigIntegerValue().add(bUnsigned.bigIntegerValue()).longValue();
        UnsignedLong unsignedSum = aUnsigned.plus(bUnsigned);
        assertThat(unsignedSum.longValue()).isEqualTo(expected);
      }
    }
  }

  public void testMinus() {
    for (long a : TEST_LONGS) {
      for (long b : TEST_LONGS) {