A common tool is <a href="https://openapi-generator.tech/" class="external-link" target="_blank">OpenAPI Generator</a>.

If you are building a **frontend**, a very interesting alternative is <a href="https://github.com/hey-api/openapi-ts" class="external-link" target="_blank">openapi-ts</a>.

## Client and SDK Generators - Sponsor

*[Fess Site Search](https://github.com/codelibs/fess-site-search)* es una alternativa gratuita a [Google Site Search](https://enterprise.google.com/search/products/gss.html). Para más detalles, consulta la [documentación de FSS JS Generator](https://fss-generator.codelibs.org/docs/manual).

## Sitio web

    builder.setUnsafeReplacement("\uFFFD");

    /*
     * Except for \n, \t, and \r, all ASCII control characters are replaced with the Unicode
     * replacement character.
     *
     * Implementation note: An alternative to the following would be to make a map that simply
     * replaces the allowed ASCII whitespace characters with themselves and to set the minimum safe

func ConfigureLogging(_ *cobra.Command, _ []string) error {
	return log.Configure(root.LoggingOptions)
}

// seeExperimentalCmd is used for commands that have been around for a release but not graduated from
// Other alternative
// for graduatedCmd see https://github.com/istio/istio/pull/26408
// for softGraduatedCmd see https://github.com/istio/istio/pull/26563
func seeExperimentalCmd(name string) *cobra.Command {

```

////

//// tab | Python 3.8+

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial009.py!}
```

////

//// tab | Python 3.8+ alternative

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial009b.py!}
```

////

#### Using `Union` or `Optional`

Bien que dans FastAPI, il est facultatif, et est utilisé principalement pour définir les en-têtes, les cookies, et les codes de statut alternatifs.

///

### <a href="https://moltenframework.com/" class="external-link" target="_blank">Molten</a>

  -jvm-debug <port>  Turn on JVM debugging, open at the given port.

  # java version (default: java from PATH, currently $(java -version 2>&1 | grep version))
  -java-home <path>  Alternate JAVA_HOME

  # jvm options and output control
  -Dkey=val          Pass -Dkey=val directly to the java runtime
  -J-X               Pass option -X directly to the java runtime
                     (-J is stripped)

					return parsedPolicy, fmt.Errorf("Unknown type %s of conditional field value %s found in POST policy form", reflect.TypeOf(condt).String(), condt)
				}
				// {"acl": "public-read" } is an alternate way to indicate - [ "eq", "$acl", "public-read" ]
				// In this case we will just collapse this into "eq" for all use cases.
				parsedPolicy.Conditions.Policies = append(parsedPolicy.Conditions.Policies, struct {

   * href="http://download.oracle.com/javase/7/docs/api/java/util/concurrent/atomic/package-summary.html#Spurious">
   * fail spuriously</a> and does not provide ordering guarantees, so is only rarely an appropriate
   * alternative to {@code compareAndSet}.
   *
   * @param i the index
   * @param expect the expected value
   * @param update the new value
   * @return true if successful
   */

...
```

#### Do czego służy OpenAPI

Schemat OpenAPI jest tym, co zasila dwa dołączone interaktywne systemy dokumentacji.

Istnieją dziesiątki alternatyw, wszystkie oparte na OpenAPI. Możesz łatwo dodać dowolną z nich do swojej aplikacji zbudowanej za pomocą **FastAPI**.