*       equivalence(x, y)} is false, {@code hash(x) == hash(y)} may still be true.
   *   <li>{@code hash(null)} is {@code 0}.
   * </ul>
   */
  public final int hash(@Nullable T t) {
    if (t == null) {
      return 0;
    }
    return doHash(t);
  }

  /**
   * Implemented by the user to return a hash code for {@code t}, subject to the requirements

  }

  private static final int STEPS = 3;

  static class TesterThatCountsCalls extends IteratorTester<Integer> {
    TesterThatCountsCalls() {
      super(STEPS, MODIFIABLE, newArrayList(1), IteratorTester.KnownOrder.KNOWN_ORDER);
    }

    int numCallsToNewTargetIterator;
    int numCallsToVerify;

    @Override

그리고 물론, 일부 매개변수는 필수로, 다른 일부는 기본값을, 또 다른 일부는 선택적으로 선언할 수 있습니다:

{* ../../docs_src/query_params/tutorial006.py hl[10] *}

위 예시에서는 3가지 쿼리 매개변수가 있습니다:

* `needy`, 필수적인 `str`.
* `skip`, 기본값이 `0`인 `int`.
* `limit`, 선택적인 `int`.

/// tip | 팁

[경로 매개변수](path-params.md#_8){.internal-link target=_blank}와 마찬가지로 `Enum`을 사용할 수 있습니다.

		t.Errorf("expected 1 thing got more")
	}
}

type CompanyNew struct {
	ID   int
	Name int
}

func TestAlterColumnDataType(t *testing.T) {
	DB.AutoMigrate(Company{})

	if err := DB.Table("companies").Migrator().AlterColumn(CompanyNew{}, "name"); err != nil {
		t.Fatalf("failed to alter column from string to int, got error %v", err)
	}

	DB.AutoMigrate(Company{})

@GwtCompatible
public final class CacheBuilder<K, V> {
  private static final int DEFAULT_INITIAL_CAPACITY = 16;
  private static final int DEFAULT_CONCURRENCY_LEVEL = 4;

  @SuppressWarnings("GoodTime") // should be a Duration
  private static final int DEFAULT_EXPIRATION_NANOS = 0;

  @SuppressWarnings("GoodTime") // should be a Duration
  private static final int DEFAULT_REFRESH_NANOS = 0;

     */
    public static String[] parse(final String line) {
        boolean insideQuote = false;
        final ArrayList<String> result = new ArrayList<>();
        int quoteCount = 0;
        final StringBuilder sb = new StringBuilder();
        for (int i = 0; i < line.length(); i++) {
            final char c = line.charAt(i);

            if (c == QUOTE) {
                insideQuote = !insideQuote;

        // Convert the LinkedHashSet to a List to maintain order
        List<SourceRoot> sourcesList = new ArrayList<>(project.sources);

        // Find the index of the original SourceRoot
        int index = -1;
        for (int i = 0; i < sourcesList.size(); i++) {
            SourceRoot source = sourcesList.get(i);
            if (source.scope() == originalSourceRoot.scope()

    assertTrue(countDownLatch.await(1L, SECONDS));
  }

  public void testOrdering() throws Exception {
    AtomicInteger integer = new AtomicInteger();
    for (int i = 0; i < 10; i++) {
      int expectedCount = i;
      list.add(
          new Runnable() {
            @Override
            public void run() {
              integer.compareAndSet(expectedCount, expectedCount + 1);

from pydantic.v1 import BaseSettings


class Settings(BaseSettings):
    app_name: str = "Awesome API"
    admin_email: str
    items_per_user: int = 50

    class Config:

  }

  private fun retryAfter(
    userResponse: Response,
    defaultDelay: Int,
  ): Int {
    val header = userResponse.header("Retry-After") ?: return defaultDelay

    // https://tools.ietf.org/html/rfc7231#section-7.1.3
    // currently ignores a HTTP-date, and assumes any non int 0 is a delay
    if (header.matches("\\d+".toRegex())) {
      return Integer.valueOf(header)
    }