* include a {@link Builder.DuplicateKey} in case duplicate keys are not allowed now or will not
   * be allowed on a later {@link Builder#buildOrThrow()} call.
   *
   * @param keyOffset 1 if this is the reverse direction of a BiMap, 0 otherwise.
   * @return an {@code Object} that is a {@code byte[]}, {@code short[]}, or {@code int[]}, the
   *     smallest possible to fit {@code tableSize}; or an {@code Object[]} where [0] is one of

# Primeros Pasos

El archivo FastAPI más simple podría verse así:

{* ../../docs_src/first_steps/tutorial001.py *}

Copia eso en un archivo `main.py`.

Ejecuta el servidor en vivo:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

/**
 * Fixed-size {@link Table} implementation backed by a two-dimensional array.
 *
 * <p><b>Warning:</b> {@code ArrayTable} is rarely the {@link Table} implementation you want. First,
 * it requires that the complete universe of rows and columns be specified at construction time.
 * Second, it is always backed by an array large enough to hold a value for every possible

pkg slices, func MinFunc[$0 interface{ ~[]$1 }, $1 interface{}]($0, func($1, $1) int) $1 #60091
pkg slices, func Replace[$0 interface{ ~[]$1 }, $1 interface{}]($0, int, int, ...$1) $0 #57433
pkg slices, func Reverse[$0 interface{ ~[]$1 }, $1 interface{}]($0) #58565
pkg slices, func Sort[$0 interface{ ~[]$1 }, $1 cmp.Ordered]($0) #60091
pkg slices, func SortFunc[$0 interface{ ~[]$1 }, $1 interface{}]($0, func($1, $1) int) #60091

			fivs, err := entry.fileInfoVersions(bucket)
			if err != nil {
				return
			}

			// We need a reversed order for rebalance,
			// to create the appropriate stack.
			versionsSorter(fivs.Versions).reverse()

			var rebalanced, expired int
			for _, version := range fivs.Versions {
				stopFn := globalRebalanceMetrics.log(rebalanceMetricRebalanceObject, poolIdx, bucket, version.Name, version.VersionID)

	}
	return err
}

// versionsSorter sorts FileInfo slices by version.
//
//msgp:ignore versionsSorter
type versionsSorter []FileInfo

func (v versionsSorter) reverse() {
	sort.Slice(v, func(i, j int) bool {
		return v[i].ModTime.Before(v[j].ModTime)
	})
}

El mismo ejemplo de arriba, devolviendo una `HTMLResponse`, podría verse así:

{* ../../docs_src/custom_response/tutorial003.py hl[2,7,19] *}

/// warning | Advertencia

    Iterators.addAll(ascending, sortedMultiset.entrySet().iterator());
    List<Entry<E>> descending = new ArrayList<>();
    Iterators.addAll(descending, sortedMultiset.descendingMultiset().entrySet().iterator());
    Collections.reverse(descending);
    assertEquals(ascending, descending);
  }

  void expectAddFailure(SortedMultiset<E> multiset, Entry<E> entry) {
    try {
      multiset.add(entry.getElement(), entry.getCount());

be sure to include it before '+r+'!')}return i}function z(e){return'end'===e?'start':'start'===e?'end':e}function G(e){var t=1<arguments.length&&void 0!==arguments[1]&&arguments[1],o=he.indexOf(e),n=he.slice(o+1).concat(he.slice(0,o));return t?n.reverse():n}function _(e,t,o,n){var i=e.match(/((?:\-|\+)?\d*\.?\d*)(.*)/),r=+i[1],p=i[2];if(!r)return e;if(0===p.indexOf('%')){var s;switch(p){case'%p':s=o;break;case'%':case'%r':default:s=n;}var d=g(s);return d[t]/100*r}if('vh'===p||'vw'===p){var a;return...

          IllegalAccessException,
          InvocationTargetException,
          FactoryMethodReturnsNullException {
    if (cls.isEnum()) {
      return;
    }
    List<? extends Invokable<?, ?>> factories = Lists.reverse(getFactories(TypeToken.of(cls)));
    if (factories.isEmpty()) {
      return;
    }
    int numberOfParameters = factories.get(0).getParameters().size();