}

  /**
   * Returns the empty immutable set. Preferred over {@link Collections#emptySet} for code
   * consistency, and because the return type conveys the immutability guarantee.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  @SuppressWarnings({"unchecked"}) // fully variant implementation (never actually produces any Es)
  public static <E> ImmutableSet<E> of() {

`Response`를 직접 반환할 때에도 헤더를 추가할 수 있습니다.

[응답을 직접 반환하기](response-directly.md){.internal-link target=_blank}에서 설명한 대로 응답을 생성하고, 헤더를 추가 매개변수로 전달하세요.

{* ../../docs_src/response_headers/tutorial001.py hl[10:12] *}

/// note | 기술적 세부사항

`from starlette.responses import Response`나 `from starlette.responses import JSONResponse`를 사용할 수도 있습니다.

**FastAPI**는 `starlette.responses`를 `fastapi.responses`로 개발자의 편의를 위해 직접 제공하지만, 대부분의 응답은 Starlette에서 직접 제공됩니다.

     */
    requireNonNull(futures);

    // Corner case: List is empty.
    if (futures.isEmpty()) {
      handleAllCompleted();
      return;
    }

    // NOTE: If we ever want to use a custom executor here, have a look at CombinedFuture as we'll
    // need to handle RejectedExecutionException

    if (allMustSucceed) {

            return text.substring(prefix.length());
        }
        return text;
    }

    /**
     * Decapitalizes a string according to JavaBeans conventions.
     * Note: If the first two characters are uppercase, the string will not be decapitalized.
     * <p>
     * Usage example:
     * </p>
     *
     * <pre>
     * StringUtil.decapitalize("UserId")  = "userId"

사용자로부터 받은 패스워드를 해싱하는 유틸리티 함수를 생성합니다.

그리고 받은 패스워드가 저장된 해시와 일치하는지 검증하는 또 다른 유틸리티 함수도 생성합니다.

그리고 사용자를 인증하고 반환하는 또 다른 함수도 생성합니다.

{* ../../docs_src/security/tutorial004_an_py310.py hl[8,49,56:57,60:61,70:76] *}

/// note

새로운 (가짜) 데이터베이스 `fake_users_db`를 확인하면, 해시 처리된 패스워드가 어떻게 생겼는지 볼 수 있습니다: `"$2b$12$EixZaYVK1fsbw1ZfbX3OXePaWxn96p36WQoeG6Lruj3vjPGga31lW"`.

///

## JWT 토큰 처리

설치된 모듈을 임포트 합니다.

* Par défaut, cela signifie que vous ne pouvez avoir qu'un seul certificat HTTPS par adresse IP.
    * Quelle que soit la taille de votre serveur ou la taille de chacune des applications qu'il contient.
    * Il existe cependant une solution à ce problème.
* Il existe une extension du protocole TLS (celui qui gère le cryptage au niveau TCP, avant HTTP) appelée <a

        try {
            String[] languages = searchHelper.getLanguages(getMockRequest(), params);

            assertNotNull(languages);
            if (languages.length > 0) {
                // Note: The actual order might be different due to normalization
                boolean hasEn = false, hasJa = false;
                for (String lang : languages) {
                    if ("en".equals(lang))

So, you will receive a clean error, with an HTTP status code of `418` and a JSON content of:

```JSON
{"message": "Oops! yolo did something. There goes a rainbow..."}
```

/// note | Technical Details

You could also use `from starlette.requests import Request` and `from starlette.responses import JSONResponse`.

 *       "safe" edge is created.
 *   <li>If a cycle is detected, an "unsafe" (cyclic) edge is created to represent a potential
 *       deadlock situation, and the appropriate Policy is executed.
 * </ul>
 *
 * <p>Note that detection of potential deadlock does not necessarily indicate that deadlock will
 * happen, as it is possible that higher level application logic prevents the cyclic lock

const aMCR = arm.ALAST + 1

// IsARMMRC reports whether the op (as defined by an arm.A* constant) is
// MRC or MCR.
func IsARMMRC(op obj.As) bool {
	switch op {
	case arm.AMRC, aMCR: // Note: aMCR is defined in this package.
		return true
	}
	return false
}

// IsARMBFX reports whether the op (as defined by an arm.A* constant) is one the