private static final class ChecksumMethodHandles {
    private static final @Nullable MethodHandle UPDATE_BB = updateByteBuffer();

    @IgnoreJRERequirement // https://github.com/mojohaus/animal-sniffer/issues/67
    static boolean updateByteBuffer(Checksum cs, ByteBuffer bb) {
      if (UPDATE_BB != null) {
        try {
          UPDATE_BB.invokeExact(cs, bb);
        } catch (Throwable e) {

Aber wenn Sie wollen, dass ein Query-Parameter erforderlich ist, vergeben Sie einfach keinen Defaultwert:

{* ../../docs_src/query_params/tutorial005.py hl[6:7] *}

Hier ist `needy` ein erforderlicher Query-Parameter vom Typ `str`.

Wenn Sie in Ihrem Browser eine URL wie:

```
http://127.0.0.1:8000/items/foo-item
```

  }

  /** Used for tags and subidentifiers. */
  private fun writeVariableLengthLong(v: Long) {
    val sink = sink()
    val bitCount = 64 - java.lang.Long.numberOfLeadingZeros(v)
    val byteCount = (bitCount + 6) / 7
    for (shift in (byteCount - 1) * 7 downTo 0 step 7) {
      val lastBit = if (shift == 0) 0 else 0b1000_0000
      sink.writeByte(((v shr shift) and 0b0111_1111).toInt() or lastBit)
    }
  }

            .add(Range.closed(5, 8))
            .add(Range.closedOpen(1, 3))
            .build();

    assertThrows(UnsupportedOperationException.class, () -> rangeSet.remove(Range.closed(6, 7)));
  }

  @SuppressWarnings("DoNotCall")
  public void testRemoveAllUnsupported() {
    RangeSet<Integer> rangeSet =
        ImmutableRangeSet.<Integer>builder()
            .add(Range.closed(5, 8))

Pero cuando quieres hacer un parámetro de query requerido, simplemente no declares ningún valor por defecto:

{* ../../docs_src/query_params/tutorial005.py hl[6:7] *}

Aquí el parámetro de query `needy` es un parámetro de query requerido de tipo `str`.

Si abres en tu navegador una URL como:

```
http://127.0.0.1:8000/items/foo-item
```

Porém, quando você quiser fazer com que o parâmetro de consulta seja obrigatório, você pode simplesmente não declarar nenhum valor como padrão.

{* ../../docs_src/query_params/tutorial005.py hl[6:7] *}

Aqui o parâmetro de consulta `needy` é um valor obrigatório, do tipo `str`.

Se você abrir no seu navegador a URL:

```
http://127.0.0.1:8000/items/foo-item
```

# ➡ 🔢

👆 💪 📣 ➡ "🔢" ⚖️ "🔢" ⏮️ 🎏 ❕ ⚙️ 🐍 📁 🎻:

{* ../../docs_src/path_params/tutorial001.py hl[6:7] *}

💲 ➡ 🔢 `item_id` 🔜 🚶‍♀️ 👆 🔢 ❌ `item_id`.

, 🚥 👆 🏃 👉 🖼 &amp; 🚶 <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a>, 👆 🔜 👀 📨:

```JSON
{"item_id":"foo"}
```

## ➡ 🔢 ⏮️ 🆎

👆 💪 📣 🆎 ➡ 🔢 🔢, ⚙️ 🐩 🐍 🆎 ✍:

# Parameter Path

"parameter" atau "variabel" path didefinisikan dengan sintaksis Python format string:

{* ../../docs_src/path_params/tutorial001.py hl[6:7] *}

Nilai parameter path `item_id` akan dikirim ke fungsi sebagai argument `item_id`:

Jika anda menjalankan contoh berikut dan kunjungi <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a>, anda akan melihat respon:

```JSON

🕐❔ 👆 📣 🔢 💲 🚫-➡ 🔢 (🔜, 👥 ✔️ 🕴 👀 🔢 🔢), ⤴️ ⚫️ 🚫 ✔.

🚥 👆 🚫 💚 🚮 🎯 💲 ✋️ ⚒ ⚫️ 📦, ⚒ 🔢 `None`.

✋️ 🕐❔ 👆 💚 ⚒ 🔢 🔢 ✔, 👆 💪 🚫 📣 🙆 🔢 💲:

{* ../../docs_src/query_params/tutorial005.py hl[6:7] *}

📥 🔢 🔢 `needy` ✔ 🔢 🔢 🆎 `str`.

🚥 👆 📂 👆 🖥 📛 💖:

```
http://127.0.0.1:8000/items/foo-item
```

...🍵 ❎ ✔ 🔢 `needy`, 👆 🔜 👀 ❌ 💖:

```JSON
{
    "detail": [

Fakat, bir sorgu parametresini zorunlu yapmak istiyorsanız varsayılan bir değer atamamanız yeterli olacaktır:

{* ../../docs_src/query_params/tutorial005.py hl[6:7] *}

Burada `needy` parametresi `str` tipinden oluşan zorunlu bir sorgu parametresidir.

Eğer tarayıcınızda şu bağlantıyı:

```
http://127.0.0.1:8000/items/foo-item
```