contributors and maintainers pledge to make participation in our project and our
community a harassment-free experience for everyone, regardless of age, body
size, disability, ethnicity, gender identity and expression, level of
experience, nationality, personal appearance, race, religion, or sexual identity
and orientation.

## Our Standards

Examples of behavior that contributes to creating a positive environment include:

    fun setLevel(level: Level) =
      apply {
        this.level = level
      }

    @JvmName("-deprecated_level")
    @Deprecated(
      message = "moved to var",
      replaceWith = ReplaceWith(expression = "level"),
      level = DeprecationLevel.ERROR,
    )
    fun getLevel(): Level = level

    @Throws(IOException::class)
    override fun intercept(chain: Interceptor.Chain): Response {

* The parameter `regex` has been deprecated and replaced by `pattern`.
    * You can read more about it in the docs for [Query Parameters and String Validations: Add regular expressions](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#add-regular-expressions).
* New Pydantic models use an improved and simplified attribute `model_config` that takes a simple dict instead of an internal class `Config` for their configuration.

//	String: the number of bytes in v.
//	Channel: the number of elements queued (unread) in the channel buffer;
//	         if v is nil, len(v) is zero.
//
// For some arguments, such as a string literal or a simple array expression, the
// result can be a constant. See the Go language specification's "Length and
// capacity" section for details.
func len(v Type) int

// The cap built-in function returns the capacity of v, according to its type:

 *          The execution of either will not affect the current project, but instead make available the
 *          <code>${executedProject}</code> expression if required. An alternate lifecycle can also be provided:
 *          for more information see the documentation on the
 *          <a href="https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html"

Crie funções com um nome que comece com `test_` (essa é a convenção padrão do `pytest`).

Use o objeto `TestClient` da mesma forma que você faz com `httpx`.

Escreva instruções `assert` simples com as expressões Python padrão que você precisa verificar (novamente, `pytest` padrão).

```Python hl_lines="2  12  15-18"
{!../../docs_src/app_testing/tutorial001.py!}
```

/// tip | "Dica"

  fun runningCallsCount(): Int = this.withLock { runningAsyncCalls.size + runningSyncCalls.size }

  @JvmName("-deprecated_executorService")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "executorService"),
    level = DeprecationLevel.ERROR,
  )
  fun executorService(): ExecutorService = executorService

//   rules:
//     - type: object  # regular objects with zero or more older versions
//       name: NAME # match object names that satisfy the wildcard expression.
//       olderThan: 70h # match objects older than this value
//       createdBefore: "2006-01-02T15:04:05.00Z" # match objects created before "date"
//       tags:
//         - key: name

## 검증 추가

매개변수 `min_length` 또한 추가할 수 있습니다:

```Python hl_lines="9"
{!../../docs_src/query_params_str_validations/tutorial003.py!}
```

## 정규식 추가

매개변수와 일치해야 하는 <abbr title="정규표현식(regular expression), regex 또는 regexp는 문자열 조회 패턴을 정의하는 문자들의 순열입니다">정규표현식</abbr>을 정의할 수 있습니다:

```Python hl_lines="10"
{!../../docs_src/query_params_str_validations/tutorial004.py!}
```

이 특정 정규표현식은 전달 받은 매개변수 값을 검사합니다:

  private double sumOfProductsOfDeltas = 0.0;

  /** Adds the given pair of values to the dataset. */
  public void add(double x, double y) {
    // We extend the recursive expression for the one-variable case at Art of Computer Programming
    // vol. 2, Knuth, 4.2.2, (16) to the two-variable case. We have two value series x_i and y_i.