Las funciones adicionales de soporte `fake_password_hasher` y `fake_save_user` son solo para demostrar un posible flujo de datos, pero por supuesto no proporcionan ninguna seguridad real.

///

## Reducir duplicación { #reduce-duplication }

Reducir la duplicación de código es una de las ideas centrales en **FastAPI**.

Die unterstützenden zusätzlichen Funktionen `fake_password_hasher` und `fake_save_user` dienen nur zur Demo eines möglichen Datenflusses, bieten jedoch natürlich keine echte Sicherheit.

///

## Verdopplung vermeiden { #reduce-duplication }

Die Reduzierung von Code-Verdoppelung ist eine der Kernideen von **FastAPI**.

Вспомогательные функции `fake_password_hasher` и `fake_save_user` используются только для демонстрации возможного потока данных и, конечно, не обеспечивают настоящую безопасность.

///

## Сократите дублирование { #reduce-duplication }

Сокращение дублирования кода - это одна из главных идей **FastAPI**.

As funções adicionais de suporte `fake_password_hasher` e `fake_save_user` servem apenas para demonstrar um fluxo possível dos dados, mas é claro que elas não fornecem segurança real.

///

## Reduzir duplicação { #reduce-duplication }

Reduzir a duplicação de código é uma das ideias principais no **FastAPI**.

            System.out.printf("Total unique values: %d%n", group.totalUnique);
            System.out.printf("Total occurrences: %d%n", group.totalOccurrences);
            System.out.printf("Duplication ratio: %.2f%n", (double) group.totalOccurrences / group.totalUnique);

            System.out.println("\nMost frequent values across all paths:");
            for (ValueFrequency v : group.mostFrequentValues) {

You just pass it to `Depends` and **FastAPI** knows how to do the rest.

///

## Share `Annotated` dependencies { #share-annotated-dependencies }

In the examples above, you see that there's a tiny bit of **code duplication**.

When you need to use the `common_parameters()` dependency, you have to write the whole parameter with the type annotation and `Depends()`:

```Python
commons: Annotated[dict, Depends(common_parameters)]
```

///

/// check

The `prefix`, `tags`, `responses`, and `dependencies` parameters are (as in many other cases) just a feature from **FastAPI** to help you avoid code duplication.

///

### Import the dependencies { #import-the-dependencies }

This code lives in the module `app.routers.items`, the file `app/routers/items.py`.

// priv.at : http://www.nic.priv.at/
// Submitted by registry <******@****.***>
priv.at

// Protonet GmbH : http://protonet.io
// Submitted by Martin Meier <******@****.***>
protonet.io

// Publication Presse Communication SARL : https://ppcom.fr
// Submitted by Yaacov Akiba Slama <******@****.***>
chirurgiens-dentistes-en-france.fr
byen.site

// pubtls.org: https://www.pubtls.org

            task.from(userguideSinglePageHtml);
            task.from(userguideMultiPage);
            task.into(extension.getUserManual().getStagingRoot().dir("final"));
            // TODO: Eliminate this duplication with the flatten task
            task.from(extension.getUserManual().getRoot().dir("img"), sub -> {
                sub.include("**/*.png", "**/*.gif", "**/*.jpg", "**/*.svg");
                sub.into("img");

     * again and get a more complete representation of the same object; but properties cannot be
     * removed, so this only allows limited reuse of the helper instance. The helper allows
     * duplication of properties (multiple name/value pairs with the same name can be added).
     */
    @Override
    public String toString() {
      // create a copy to keep it consistent in case value changes