### Target language

Translate to Korean (한국어).

Language code: ko.

### Grammar and tone

- Use polite, instructional Korean (e.g. 합니다/하세요 style).
- Keep the tone consistent with the existing Korean FastAPI docs.
- Do not translate “You” literally as “당신”. Use “여러분” where appropriate, or omit the subject if it sounds more natural in Korean.

### Headings

- Follow existing Korean heading style (short, action-oriented headings like “확인하기”).

   * #transform} methods all return {@link Double#NaN}. The {@link #inverse} method returns the same
   * instance.
   */
  public static LinearTransformation forNaN() {
    return NaNLinearTransformation.INSTANCE;
  }

  /** Returns whether this is a vertical transformation. */
  public abstract boolean isVertical();

- [Español (Spanish)](docs/es/README.md)
- [Português (Brazilian Portuguese)](docs/pt-BR/README.md)
- [Français (French)](docs/fr/README.md)
- [Deutsch (German)](docs/de/README.md)
- [한국어 (Korean)](docs/ko/README.md)

## Powered By

* [Lasta Di](https://github.com/lastaflute/lasta-di "Lasta Di"): DI Container
* [LastaFlute](https://github.com/lastaflute/lastaflute "LastaFlute"): Web Framework

   *
   * <p>If the dataset contains any non-finite values ({@link Double#POSITIVE_INFINITY}, {@link
   * Double#NEGATIVE_INFINITY}, or {@link Double#NaN}) then the result is {@link
   * LinearTransformation#forNaN()}.
   *
   * @throws IllegalStateException if the dataset is empty or contains a single pair of values, or
   *     both the {@code x} and {@code y} dataset have zero population variance
   */

* 🌐 Update Korean translation for `docs/ko/docs/help-fastapi.md`. PR [#13262](https://github.com/fastapi/fastapi/pull/13262) by [@Zerohertz](https://github.com/Zerohertz).
* 🌐 Add Korean translation for `docs/ko/docs/advanced/custom-response.md`. PR [#13265](https://github.com/fastapi/fastapi/pull/13265) by [@11kkw](https://github.com/11kkw).

   *
   * <p>If the dataset contains any non-finite values ({@link Double#POSITIVE_INFINITY}, {@link
   * Double#NEGATIVE_INFINITY}, or {@link Double#NaN}) then the result is {@link
   * LinearTransformation#forNaN()}.
   *
   * @throws IllegalStateException if the dataset is empty or contains a single pair of values, or
   *     both the {@code x} and {@code y} dataset must have zero population variance
   */

    assertThrows(IllegalArgumentException.class, () -> LinearTransformation.horizontal(Double.NaN));
  }

  public void testForNaN() {
    LinearTransformation transformation = LinearTransformation.forNaN();
    assertLinearTransformationNaN(transformation);
  }

    assertThrows(IllegalArgumentException.class, () -> LinearTransformation.horizontal(Double.NaN));
  }

  public void testForNaN() {
    LinearTransformation transformation = LinearTransformation.forNaN();
    assertLinearTransformationNaN(transformation);
  }

# Über FastAPI-Versionen { #about-fastapi-versions }

**FastAPI** wird bereits in vielen Anwendungen und Systemen produktiv eingesetzt. Und die Testabdeckung wird bei 100 % gehalten. Aber seine Entwicklung geht immer noch schnell voran.

Es werden regelmäßig neue Funktionen hinzugefügt, Fehler werden regelmäßig behoben und der Code wird weiterhin kontinuierlich verbessert.

Das müssen Sie selbst in Ihrem Code tun und sicherstellen, dass Sie diese JSON-Schlüssel verwenden.

Es ist fast das Einzige, woran Sie denken müssen, es selbst richtigzumachen und die Spezifikationen einzuhalten.

Den Rest erledigt **FastAPI** für Sie.

///

## Die Abhängigkeiten aktualisieren { #update-the-dependencies }