@Override
    public Entry<Country, String>[] createArray(int length) {
      return (Entry<Country, String>[]) new Entry<?, ?>[length];
    }

    @Override
    public Iterable<Entry<Country, String>> order(List<Entry<Country, String>> insertionOrder) {
      return insertionOrder;
    }

    @Override
    public Country[] createKeyArray(int length) {
      return new Country[length];
    }

class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None


@app.put("/items/{item_id}")
async def update_item(
    *,
    item_id: int = Path(title="The ID of the item to get", ge=0, le=1000),
    q: str | None = None,
    item: Item | None = None,
):
    results = {"item_id": item_id}
    if q:
        results.update({"q": q})
    if item:

本例把 `item_id` 的类型声明为 `int`。

/// check | 检查

类型声明将为函数提供错误检查、代码补全等编辑器支持。

///

## 数据<dfn title="也称为：序列化、解析、编组">转换</dfn> { #data-conversion }

运行示例并访问 [http://127.0.0.1:8000/items/3](http://127.0.0.1:8000/items/3)，返回的响应如下：

```JSON
{"item_id":3}
```

/// check | 检查

注意，函数接收并返回的值是 `3`（ `int`），不是 `"3"`（`str`）。

import strawberry
from fastapi import FastAPI
from strawberry.fastapi import GraphQLRouter


@strawberry.type
class User:
    name: str
    age: int


@strawberry.type
class Query:
    @strawberry.field
    def user(self) -> User:
        return User(name="Patrick", age=100)


schema = strawberry.Schema(query=Query)


graphql_app = GraphQLRouter(schema)

app = FastAPI()

    ).filter { it.isSupported() }

  @Throws(IOException::class)
  override fun connectSocket(
    socket: Socket,
    address: InetSocketAddress,
    connectTimeout: Int,
  ) {
    try {
      socket.connect(address, connectTimeout)
    } catch (e: ClassCastException) {
      // On android 8.0, socket.connect throws a ClassCastException due to a bug

    @Mock
    private KerberosKey key1;

    @Mock
    private KerberosKey key2;

    private static final String LOGIN_CONTEXT_NAME = "TestLoginContext";
    private static final int KEY_TYPE_1 = 1;
    private static final int KEY_TYPE_2 = 2;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
    }

    /**
     * Test constructor with a valid login context.
     *

    void testRapidCalls() {
        Instant[] instants = new Instant[1000];
        for (int i = 0; i < instants.length; i++) {
            instants[i] = MonotonicClock.now();
        }

        // Verify monotonic behavior across all measurements
        for (int i = 1; i < instants.length; i++) {
            assertTrue(
                    instants[i].compareTo(instants[i - 1]) >= 0,

            }
            stream.reset();

            int offset = 0;
            while (stream.incrementToken()) {
                final CharTermAttribute att = stream.getAttribute(CharTermAttribute.class);
                final String term = att.toString();
                final int pos = inputStr.indexOf(term, offset);
                if (pos > 0) {

  @CanIgnoreReturnValue
  @Override
  public Collection<V> replaceValues(@ParametricNullness K key, Iterable<? extends V> values) {
    return delegate().replaceValues(key, values);
  }

  @Override
  public int size() {
    return delegate().size();
  }

  @Override
  public Collection<V> values() {
    return delegate().values();
  }

  @Override

  @CanIgnoreReturnValue
  @Override
  public Collection<V> replaceValues(@ParametricNullness K key, Iterable<? extends V> values) {
    return delegate().replaceValues(key, values);
  }

  @Override
  public int size() {
    return delegate().size();
  }

  @Override
  public Collection<V> values() {
    return delegate().values();
  }

  @Override