}

  private <T> void assertNextPermutation(
      List<T> expectedPermutation, Iterator<List<T>> permutations) {
    assertTrue("Expected another permutation, but there was none.", permutations.hasNext());
    assertEquals(expectedPermutation, permutations.next());
  }

  private <T> void assertNoMorePermutations(Iterator<List<T>> permutations) {

例えば、パスパラメータ`item_id`に対して`title`のメタデータを宣言するには以下のようにします:

{* ../../docs_src/path_params_numeric_validations/tutorial001.py hl[8] *}

/// note | 備考

パスの一部でなければならないので、パスパラメータは常に必須です。

そのため、`...`を使用して必須と示す必要があります。

それでも、`None`で宣言しても、デフォルト値を設定しても、何の影響もなく、常に必要とされていることに変わりはありません。

///

## 必要に応じてパラメータを並び替える

クエリパラメータ`q`を必須の`str`として宣言したいとしましょう。

また、このパラメータには何も宣言する必要がないので、`Query`を使う必要はありません。

// occurs maximum number of times, the error value returned depends on how
// golang's map orders keys. This doesn't affect correctness as long as quorum
// value is greater than or equal to simple majority, since none of the equally
// maximal values would occur quorum or more number of times.
func reduceErrs(errs []error, ignoredErrs []error) (maxCount int, maxErr error) {
	errorCounts := make(map[error]int)
	for _, err := range errs {

      "FINE: Q10000 starting              : task",
      "FINE: Q10000 finished run in   0 µs: task",
    )
  }

  /** Inspect how many runnables have been enqueued. If none then we're truly sequential. */
  @Test fun singleQueueIsSerial() {
    redQueue.execute("task one", 100.µs) {
      log += "one:run@${taskFaker.nanoTime} parallel=${taskFaker.isParallel}"
    }

        request = new Smb2CreateRequest(mockConfig, "test.txt");

        byte[] buffer = new byte[1024];
        request.writeBytesWireFormat(buffer, 0);

        // Check default oplock level (NONE)
        assertEquals(Smb2CreateRequest.SMB2_OPLOCK_LEVEL_NONE, buffer[3]);

        // Check default impersonation level (IMPERSONATION)

    SerializableTester.reserializeAndAssert(Doubles.stringConverter());
  }

  public void testToArray() {
    // need explicit type parameter to avoid javac warning!?
    List<Double> none = Arrays.<Double>asList();
    assertThat(Doubles.toArray(none)).isEqualTo(EMPTY);

    List<Double> one = Arrays.asList(1.0);
    assertThat(Doubles.toArray(one)).isEqualTo(ARRAY1);

    double[] array = {0.0, 1.0, Math.PI};

    SerializableTester.reserializeAndAssert(Longs.stringConverter());
  }

  public void testToArray() {
    // need explicit type parameter to avoid javac warning!?
    List<Long> none = Arrays.<Long>asList();
    assertThat(Longs.toArray(none)).isEqualTo(EMPTY);

    List<Long> one = Arrays.asList(1L);
    assertThat(Longs.toArray(one)).isEqualTo(ARRAY1);

    long[] array = {0L, 1L, 0x0FF1C1AL};

    SerializableTester.reserializeAndAssert(Shorts.stringConverter());
  }

  public void testToArray() {
    // need explicit type parameter to avoid javac warning!?
    List<Short> none = Arrays.<Short>asList();
    assertThat(Shorts.toArray(none)).isEqualTo(EMPTY);

    List<Short> one = Arrays.asList((short) 1);
    assertThat(Shorts.toArray(one)).isEqualTo(ARRAY1);

    short[] array = {(short) 0, (short) 1, (short) 3};

```

/// tip | 팁

<a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> 의 두 번째 인자는 반환할 기본값입니다.

여기서는 `"World"`를 넣었기에 기본값으로써 사용됩니다. 넣지 않으면 `None` 이 기본값으로 사용됩니다.

///

그러면 해당 파이썬 프로그램을 다음과 같이 호출할 수 있습니다:

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console
// Here we don't set the env var yet
$ python main.py

            } else {
                filePrefix = name;
                extention = "";
            }
            filePrefix = filePrefix.replaceAll("\\p{Zs}", "_");
        } else {
            filePrefix = "none";
            extention = "";
        }
        File inputFile = null;
        File outputFile = null;
        try {
            inputFile =