# How To - Recipes { #how-to-recipes }

Here you will see different recipes or "how to" guides for **several topics**.

Most of these ideas would be more or less **independent**, and in most cases you should only need to study them if they apply directly to **your project**.

If something seems interesting and useful to your project, go ahead and check it, but otherwise, you might probably just skip them.

/// tip

   * @return the {@code char} value that equals {@code value}
   * @throws IllegalArgumentException if {@code value} is greater than {@link Character#MAX_VALUE}
   *     or less than {@link Character#MIN_VALUE}
   */
  public static char checkedCast(long value) {
    char result = (char) value;
    checkArgument(result == value, "Out of range: %s", value);
    return result;
  }

  /**

   * @return the {@code short} value that equals {@code value}
   * @throws IllegalArgumentException if {@code value} is greater than {@link Short#MAX_VALUE} or
   *     less than {@link Short#MIN_VALUE}
   */
  public static short checkedCast(long value) {
    short result = (short) value;
    checkArgument(result == value, "Out of range: %s", value);
    return result;
  }

  /**

Vous pouvez également utiliser des champs `bytes` avec `ser_json_bytes` dans la configuration du modèle pour les données de sortie ; Pydantic sérialisera alors les octets en base64 lors de la génération de la réponse JSON.

{* ../../docs_src/json_base64_bytes/tutorial001_py310.py ln[1:2,12:16,29,38:41] hl[16] *}

import okhttp3.recipes.kt.WireSharkListenerFactory.WireSharkKeyLoggerListener.Launch.Gui
import okio.ByteString.Companion.toByteString

/**
 * Logs SSL keys to a log file, allowing Wireshark to decode traffic and be examined with http2
 * filter. The approach is to hook into JSSE log events for the messages between client and server

## 數值驗證：大於與小於或等於 { #number-validations-greater-than-and-less-than-or-equal }

同樣也適用於：

* `gt`：大於（`g`reater `t`han）
* `le`：小於或等於（`l`ess than or `e`qual）

{* ../../docs_src/path_params_numeric_validations/tutorial005_an_py310.py hl[10] *}

## 數值驗證：浮點數、大於與小於 { #number-validations-floats-greater-than-and-less-than }

數值驗證也適用於 `float`。

Aynısı şunlar için de geçerlidir:

* `gt`: `g`reater `t`han
* `le`: `l`ess than or `e`qual

{* ../../docs_src/path_params_numeric_validations/tutorial005_an_py310.py hl[10] *}

## Sayı Doğrulamaları: `float` Değerler, Büyük ve Küçük { #number-validations-floats-greater-than-and-less-than }

Sayı doğrulamaları `float` değerler için de çalışır.

  @Test fun validateCompactTableInvariants() {
    // Less than 16,834 bytes, because we binary search on a 14-bit index.
    assertThat(compactTable.sections.length).isLessThan(1 shl 14)

    // Less than 65,536 bytes, because we binary search on a 14-bit index with a stride of 4 bytes.
    assertThat(compactTable.ranges.length).isLessThan((1 shl 14) * 4)

    // Less than 16,384 chars, because we index on a 14-bit index in the ranges table.

// Returns logOnceType
func newLogOnceType() *logOnceType {
	l := &logOnceType{IDMap: make(map[string]onceErr)}
	go l.cleanupRoutine()
	return l
}

var logOnce = newLogOnceType()

// LogOnceIf - Logs notification errors - once per error.
// id is a unique identifier for related log messages, refer to cmd/notification.go
// on how it is used.

   *     are processed in FIFO order; if {@code false} the access order is unspecified.
   * @param c the collection of elements to initially contain
   * @throws IllegalArgumentException if {@code capacity} is less than {@code c.size()}, or less
   *     than 1.
   * @throws NullPointerException if the specified collection or any of its elements are null
   */