from fastapi import Depends, FastAPI

app = FastAPI()


async def common_parameters(q: str | None = None, skip: int = 0, limit: int = 100):
    return {"q": q, "skip": skip, "limit": limit}


@app.get("/items/")
async def read_items(commons: dict = Depends(common_parameters)):
    return commons


@app.get("/users/")
async def read_users(commons: dict = Depends(common_parameters)):

				return
			}
		case "ForwardTo":
			z.ForwardTo, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "ForwardTo")
				return
			}
		case "Limit":
			z.Limit, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "Limit")
				return
			}
		case "DiskID":
			z.DiskID, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "DiskID")
				return
			}
		default:

     *
     * @param expectTag the expected tag number
     * @param limit the maximum length limit
     * @param in the ASN.1 input stream
     * @return coded bytes of the tagged object
     * @throws IOException if reading fails or tag mismatch
     */
    public static byte[] readUnparsedTagged(final int expectTag, final int limit, final ASN1InputStream in) throws IOException {
        final int ftag = in.read();

from typing import Annotated

from fastapi import Depends, FastAPI

app = FastAPI()


async def common_parameters(q: str | None = None, skip: int = 0, limit: int = 100):
    return {"q": q, "skip": skip, "limit": limit}


@app.get("/items/")
async def read_items(commons: Annotated[dict, Depends(common_parameters)]):
    return commons


@app.get("/users/")
async def read_users(commons: Annotated[dict, Depends(common_parameters)]):

   */
  private fun findRangesOffset(
    codePoint: Int,
    position: Int,
    limit: Int,
  ): Int {
    val target = codePoint and 0x7f
    val offset =
      binarySearch(
        position = position,
        limit = limit,
      ) { index ->
        val entryIndex = index * 4
        val b0 = ranges[entryIndex].code

    int limit = charBuffer.limit();
    int numChars = reader.read(charBuffer.array(), limit, availableCapacity(charBuffer));
    if (numChars == -1) {
      endOfInput = true;
    } else {
      Java8Compatibility.limit(charBuffer, limit + numChars);
    }
  }

  /** Returns the number of elements between the limit and capacity. */

func NewQueueStore[I any](directory string, limit uint64, ext string) *QueueStore[I] {
	if limit == 0 {
		limit = defaultLimit
	}

	if ext == "" {
		ext = defaultExt
	}

	return &QueueStore[I]{
		directory:  directory,
		entryLimit: limit,
		fileExt:    ext,
		entries:    make(map[string]int64, limit),
	}
}

// Open - Creates the directory if not present.

Zum Beispiel sind in der URL:

```
http://127.0.0.1:8000/items/?skip=0&limit=10
```

... die Query-Parameter:

* `skip`: mit dem Wert `0`
* `limit`: mit dem Wert `10`

Da sie Teil der URL sind, sind sie „naturgemäß“ Strings.

            }
            sendBlockedResponse(httpResponse);
            return;
        }

        // Check rate limit
        if (!rateLimitHelper.allowRequest(clientIp)) {
            if (logger.isDebugEnabled()) {
                logger.debug("Rate limit exceeded: clientIp={}", clientIp);
            }
            sendRateLimitResponse(httpResponse, rateLimitHelper.getRetryAfterSeconds());
            return;

## 默认值 { #defaults }

查询参数不是路径的固定内容，它是可选的，还支持默认值。

上例用 `skip=0` 和 `limit=10` 设定默认值。

访问 URL：

```
http://127.0.0.1:8000/items/
```

与访问以下地址相同：

```
http://127.0.0.1:8000/items/?skip=0&limit=10
```

但如果访问：

```
http://127.0.0.1:8000/items/?skip=20
```

查询参数的值就是：

* `skip=20`：在 URL 中设定的值
* `limit=10`：使用默认值

## 可选参数 { #optional-parameters }