/// info | 情報

Pydanticについてより学びたい方は<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">ドキュメントを参照してください</a>.

///

**FastAPI** はすべてPydanticをベースにしています。

すべてのことは[チュートリアル - ユーザーガイド](tutorial/index.md){.internal-link target=_blank}で実際に見ることができます。

## **FastAPI**での型ヒント

**FastAPI** はこれらの型ヒントを利用していくつかのことを行います。

**FastAPI** では型ヒントを使って型パラメータを宣言すると以下のものが得られます:

* **エディタサポート**.
* **型チェック**.

// internal buffer only needs to be resliced.
// It returns the index where bytes should be written and whether it succeeded.
func (b *Buffer) tryGrowByReslice(n int) (int, bool) {
	if l := len(b.buf); n <= cap(b.buf)-l {
		b.buf = b.buf[:l+n]
		return l, true
	}
	return 0, false
}

// grow grows the buffer to guarantee space for n more bytes.
// It returns the index where bytes should be written.

  - [Java Modules](https://docs.gradle.org/current/samples/sample_java_modules_multi_project.html)
  - [Android Apps](https://developer.android.com/studio/build/index.html)
  - [Groovy Applications](https://docs.gradle.org/current/samples/sample_building_groovy_applications.html)
  - [Kotlin Libraries](https://docs.gradle.org/current/samples/sample_building_kotlin_libraries.html)

	var (
		got   []string
		funcs = reflect.ValueOf(v).Elem().FieldByName("fns")
	)

	for i := 0; i < funcs.Len(); i++ {
		got = append(got, getFuncName(funcs.Index(i)))
	}

	return fmt.Sprint(got) == fmt.Sprint(fnames), fmt.Sprintf("expects %v, got %v", fnames, got)
}

func getFuncName(fc interface{}) string {
	reflectValue, ok := fc.(reflect.Value)
	if !ok {

			PkgPath: ownField.StructField.PkgPath,
			Type:    ownField.StructField.Type,
			Tag: removeSettingFromTag(appendSettingFromTag(ownField.StructField.Tag, "primaryKey"),
				"column", "autoincrement", "index", "unique", "uniqueindex"),
		})
	}

	for idx, relField := range refForeignFields {
		joinFieldName := cases.Title(language.Und, cases.NoLower).String(relation.FieldSchema.Name) + relField.Name

		if line == "" {
			continue
		}
		// Find first separator.
		idx := strings.IndexByte(line, trailerKVSeparator[0])
		if idx <= 0 || idx >= len(line) {
			if cr.debug {
				fmt.Printf("index, ':' not found in %q\n", line)
			}
			return errMalformedEncoding
		}
		key := line[:idx]
		value := line[idx+1:]
		if _, ok := wantTrailers[key]; !ok {
			if cr.debug {

Esto es un consejo.

///

## First Translation PR

When there's a first translation for a language, it will have a `docs/{lang code}/docs/index.md` translated file and a `docs/{lang code}/mkdocs.yml`.

For example, for Bosnian, it would be:

* `docs/bs/docs/index.md`
* `docs/bs/mkdocs.yml`

The `mkdocs.yml` file will have only the following content:

```YAML
INHERIT: ../en/mkdocs.yml
```

		return ErrSecretKeyMismatch
	}
	return nil
}

// DerivePartKey derives an unique 256 bit key from an ObjectKey and the part index.
func (key ObjectKey) DerivePartKey(id uint32) (partKey [32]byte) {
	var bin [4]byte
	binary.LittleEndian.PutUint32(bin[:], id)

	mac := hmac.New(sha256.New, key[:])
	mac.Write(bin[:])
	mac.Sum(partKey[:0])

Und dann verwenden wir es beim Erstellen der `FastAPI`-App.

Dann könnten Sie OpenAPI (einschließlich der Dokumentationsoberflächen) deaktivieren, indem Sie die Umgebungsvariable `OPENAPI_URL` auf einen leeren String setzen, wie zum Beispiel:

<div class="termy">

```console
$ OPENAPI_URL= uvicorn main:app

 *      </td>
 *   </tr>
 * </table>
 * <p>This is only a small set of all the options. A complete list can be found at
 * <a href="https://maven.apache.org/components/plugin-tools/maven-plugin-tools-annotations/index.html" target="_blank">
 * Maven Plugin Tool for Annotations</a>.
 *
 * @see <a href="https://maven.apache.org/guides/plugin/guide-java-plugin-development.html" target="_blank">Guide to Developing Java Plugins</a>