*
 * @author Mike Bostock
 * @since 1.0
 */
@GwtCompatible
public final class Charsets {

  /**
   * US-ASCII: seven-bit ASCII, the Basic Latin block of the Unicode character set (ISO646-US).
   *
   * @deprecated Use {@link StandardCharsets#US_ASCII} instead.
   */
  @Deprecated @J2ktIncompatible @GwtIncompatible // Charset not supported by GWT

            assertEquals(expectedSize, buffer.size());
        }

        @Test
        @DisplayName("Should calculate size for Unicode characters")
        void testSizeWithUnicodeCharacters() {
            // Unicode characters still count as single chars in Java
            String path = "\\\\server\\共享\\路径";
            buffer = new DfsReferralRequestBuffer(path, 3);

このようにして、モデル間の違いだけを宣言することができます:

{* ../../docs_src/extra_models/tutorial002.py hl[9,15,16,19,20,23,24] *}

## `Union`または`anyOf`

レスポンスを２つの型の`Union`として宣言することができます。

OpenAPIでは`anyOf`で定義されます。

そのためには、標準的なPythonの型ヒント<a href="https://docs.python.org/3/library/typing.html#typing.Union" class="external-link" target="_blank">`typing.Union`</a>を使用します:

{* ../../docs_src/extra_models/tutorial003.py hl[1,14,15,18,19,20,33] *}

## モデルのリスト

    public void testEncryptDecryptUnicode() throws Exception {
        // Test with Unicode characters
        char[] plaintext = "パスワード🔐密码".toCharArray();

        byte[] encrypted = storage.encryptCredentials(plaintext);
        char[] decrypted = storage.decryptCredentials(encrypted);

        assertArrayEquals(plaintext, decrypted, "Unicode should be preserved");

        // Clean up
        Arrays.fill(plaintext, '\0');

		{"0.123456789abcdef", time.Time{}, false},
		{"foo", time.Time{}, false},
		{"\x00", time.Time{}, false},
		{"𝟵𝟴𝟳𝟲𝟱.𝟰𝟯𝟮𝟭𝟬", time.Time{}, false}, // Unicode numbers (U+1D7EC to U+1D7F5)
		{"98765﹒43210", time.Time{}, false}, // Unicode period (U+FE52)
	}

	for _, v := range vectors {
		ts, err := parsePAXTime(v.in)
		ok := (err == nil)
		if v.ok != ok {
			if v.ok {

### Create it { #create-it }

Create a file `main.py` with:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    public void test_constructor_withUnicodeCharacters() {
        // Test with Unicode characters
        String message = "検索操作はサポートされていません 🔍";
        UnsupportedSearchException exception = new UnsupportedSearchException(message);

        assertEquals(message, exception.getMessage());

        assertEquals(14, bytesEncoded);
        assertEquals(0, SMBUtil.readInt4(buffer, 8)); // Name length should be 0
    }

    @Test
    @DisplayName("Test with Unicode pipe name")
    void testWithUnicodePipeName() {
        // Test with Unicode characters
        String pipeName = "テストパイプ名";
        FsctlPipeWaitRequest request = new FsctlPipeWaitRequest(pipeName);

* 🚥 🔢 **⭐ 🆎** (💖 `int`, `float`, `str`, `bool`, ♒️) ⚫️ 🔜 🔬 **🔢** 🔢.
* 🚥 🔢 📣 🆎 **Pydantic 🏷**, ⚫️ 🔜 🔬 📨 **💪**.

/// note

FastAPI 🔜 💭 👈 💲 `q` 🚫 ✔ ↩️ 🔢 💲 `= None`.

 `Union` `Union[str, None]` 🚫 ⚙️ FastAPI, ✋️ 🔜 ✔ 👆 👨‍🎨 🤝 👆 👍 🐕‍🦺 & 🔍 ❌.

///

## 🍵 Pydantic

			i++
		}

		// Trim whitespace of segment
		segmentStart, segmentEnd := start, i
		for segmentStart < segmentEnd && unicode.IsSpace(rune(path[segmentStart])) {
			segmentStart++
		}
		for segmentEnd > segmentStart && unicode.IsSpace(rune(path[segmentEnd-1])) {
			segmentEnd--
		}

		// Check for ".." or "."
		switch {