[<a href="#Go_1.18">Go 1.18</a>].
</p>

<pre>
type Reader interface {
	Read(p []byte) (n int, err error)
	Close() error
}

type Writer interface {
	Write(p []byte) (n int, err error)
	Close() error
}

// ReadWriter's methods are Read, Write, and Close.
type ReadWriter interface {
	Reader  // includes methods of Reader in ReadWriter's method set

/// tip | Consejo

Aquí estamos usando `Query()` porque este es un **parámetro de query**. Más adelante veremos otros como `Path()`, `Body()`, `Header()`, y `Cookie()`, que también aceptan los mismos argumentos que `Query()`.

///

FastAPI ahora:

* Validará los datos asegurándose de que la longitud máxima sea de 50 caracteres

  public boolean isEmpty() {
    return end == start;
  }

  /**
   * Returns the {@code double} value present at the given index.
   *
   * @throws IndexOutOfBoundsException if {@code index} is negative, or greater than or equal to
   *     {@link #length}
   */
  public double get(int index) {
    Preconditions.checkElementIndex(index, length());
    return array[start + index];
  }

  /**

  public boolean isEmpty() {
    return end == start;
  }

  /**
   * Returns the {@code int} value present at the given index.
   *
   * @throws IndexOutOfBoundsException if {@code index} is negative, or greater than or equal to
   *     {@link #length}
   */
  public int get(int index) {
    Preconditions.checkElementIndex(index, length());
    return array[start + index];
  }

  /**

  /**
   * Test for 2-bit characteristics. A characteristic is a delta in the input which is repeated in
   * the output. For example, if f() is a block cipher and c is a characteristic, then f(x^c) =
   * f(x)^c with greater than expected probability. The test for funneling is merely a test for
   * 1-bit characteristics.
   *
   * <p>There is more general code provided by Bob Jenkins to test arbitrarily sized characteristics

   * @param maxItems the maximum number of items returned
   * @return a splitter with the desired configuration
   * @since 9.0
   */
  public Splitter limit(int maxItems) {
    checkArgument(maxItems > 0, "must be greater than zero: %s", maxItems);
    return new Splitter(strategy, omitEmptyStrings, trimmer, maxItems);
  }

  /**
   * Returns a splitter that behaves equivalently to {@code this} splitter, but automatically

      if (newCapacity != entriesSize) {
        resizeEntries(newCapacity);
      }
    }
  }

  /**
   * Resizes the internal entries array to the specified capacity, which may be greater or less than
   * the current capacity.
   */
  void resizeEntries(int newCapacity) {
    this.entries = Arrays.copyOf(requireEntries(), newCapacity);
    this.elements = Arrays.copyOf(requireElements(), newCapacity);

        final int targetInfoLength = targetInfo != null ? targetInfo.length : 0;
        final byte[] temp = new byte[28 + targetInfoLength + 4];

        Encdec.enc_uint32le(0x00000101, temp, 0); // Header
        Encdec.enc_uint32le(0x00000000, temp, 4); // Reserved
        Encdec.enc_uint64le(nanos1601, temp, 8);
        System.arraycopy(clientChallenge, 0, temp, 16, 8);

/// tip | Astuce

Ici nous utilisons `Query()` parce qu’il s’agit d’un **paramètre de requête**. Plus tard nous verrons d’autres comme `Path()`, `Body()`, `Header()` et `Cookie()`, qui acceptent également les mêmes arguments que `Query()`.

///

FastAPI va maintenant :

- **Valider** les données en s’assurant que la longueur maximale est de 50 caractères

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