return (delegate != null) ? delegate.toArray() : Arrays.copyOf(requireElements(), size);
  }

  @CanIgnoreReturnValue
  @Override
  @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
  public <T extends @Nullable Object> T[] toArray(T[] a) {
    if (needsAllocArrays()) {
      if (a.length > 0) {
        a[0] = null;
      }
      return a;
    }

    @SuppressWarnings("nullness")
    Object[] result = ObjectArrays.toArrayImpl(this);
    return result;
  }

  @Override
  @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
  public <T extends @Nullable Object> T[] toArray(T[] other) {
    return ObjectArrays.toArrayImpl(this, other);
  }

  @Override
  public boolean contains(@Nullable Object object) {
    try {

///

### <a href="https://github.com/hugapi/hug" class="external-link" target="_blank">Hug</a>

Hug war eines der ersten Frameworks, welches die Deklaration von API-Parametertypen mithilfe von Python-Typhinweisen implementierte. Das war eine großartige Idee, die andere Tools dazu inspirierte, dasselbe zu tun.

///

## 🆎 🔑 **FastAPI**

**FastAPI** ✊ 📈 👫 🆎 🔑 📚 👜.

⏮️ **FastAPI** 👆 📣 🔢 ⏮️ 🆎 🔑 & 👆 🤚:

* **👨‍🎨 🐕‍🦺**.
* **🆎 ✅**.

...and **FastAPI** uses the same declarations :

* **🔬 📄**: ⚪️➡️ 📨 ➡ 🔢, 🔢 🔢, 🎚, 💪, 🔗, ♒️.
* **🗜 💽**: ⚪️➡️ 📨 🚚 🆎.
* **✔ 💽**: 👟 ⚪️➡️ 🔠 📨:
    * 🏭 **🏧 ❌** 📨 👩‍💻 🕐❔ 📊 ❌.
* **📄** 🛠️ ⚙️ 🗄:
    * ❔ ⤴️ ⚙️ 🏧 🎓 🧾 👩‍💻 🔢.

"crypto/internal/fips140" _ "crypto/internal/fips140/check" "errors" "sync" ) func fipsPCT(k *PrivateKey) error { return fips140.PCT("Ed25519 sign and verify PCT", func() error { return pairwiseTest(k) }) } // pairwiseTest needs to be a top-level function declaration to let the calls // inline and their allocations not escape. func pairwiseTest(k *PrivateKey) error { msg := []byte("PCT") sig := Sign(k, msg) // Note that this runs pub.a.SetBytes. If we wanted to make key generation // in FIPS mode faster, we...

{* ../../docs_src/first_steps/tutorial001.py *}

Salin file tersebut ke `main.py`.

Jalankan di server:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

    return toArray(EMPTY_ARRAY);
  }

  @CanIgnoreReturnValue
  @Override
  /*
   * This suppression is here for two reasons:
   *
   * 1. b/192354773 in our checker affects toArray declarations.
   *
   * 2. `other[size] = null` is unsound. We could "fix" this by requiring callers to pass in an
   * array with a nullable element type. But probably they usually want an array with a non-nullable

FastAPI usará este `response_model` para hacer toda la documentación de datos, validación, etc. y también para **convertir y filtrar los datos de salida** a su declaración de tipo.

/// tip | Consejo

Si tienes chequeos estrictos de tipos en tu editor, mypy, etc., puedes declarar el tipo de retorno de la función como `Any`.

{* ../../docs_src/first_steps/tutorial001.py *}

Скопіюйте це до файлу `main.py`.

Запустіть сервер:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

{* ../../docs_src/first_steps/tutorial001.py *}

Copia eso en un archivo `main.py`.

Ejecuta el servidor en vivo:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>