* @since 2.0
 */
@GwtCompatible
public class Joiner {
  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(String separator) {
    return new Joiner(separator);
  }

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(char separator) {

   * it is returned directly. Otherwise, a new array of size {@code minLength + padding} is
   * returned, containing the values of {@code array}, and zeroes in the remaining places.
   *
   * @param array the source array
   * @param minLength the minimum length the returned array must guarantee
   * @param padding an extra amount to "grow" the array by if growth is necessary

   * uniform, the actual concurrency observed may vary. Ideally, you should choose a value to
   * accommodate as many threads as will ever concurrently modify the table. Using a significantly
   * higher value than you need can waste space and time, and a significantly lower value can lead
   * to thread contention. But overestimates and underestimates within an order of magnitude do not

    extends AbstractMap<K, V> implements Serializable {
  /*
   * TODO: Make this a drop-in replacement for j.u. versions, actually drop them in, and test the
   * world. Figure out what sort of space-time tradeoff we're actually going to get here with the
   * *Map variants. This class is particularly hard to benchmark, because the benefit is not only in

				return nil, err
			}
			continue
		}
		data, _ = json.Marshal(cfg)
		break
	}
	if osIsPermission(err) {
		logger.Info("Older config found but is not readable %s, proceeding to read config from other places", err)
	}
	if osIsNotExist(err) || osIsPermission(err) || len(data) == 0 {
		data, err = readConfig(GlobalContext, objAPI, configFile)
		if err != nil {
			// when config.json is not found, then we freshly initialize.

		c.done = nil
	}
	return c.rc.Close()
}

// keepHTTPReqResponseAlive can be used to avoid timeouts with long storage
// operations, such as bitrot verification or data usage scanning.
// Every 10 seconds a space character is sent.
// keepHTTPReqResponseAlive will wait for the returned body to be read before starting the ticker.
// The returned function should always be called to release resources.

しかし、そうすると「最初の文字を大文字に変換するあのメソッド」を呼び出す必要があります。

それは`upper`でしたか？`uppercase`でしたか？それとも`first_uppercase`？または`capitalize`？

そして、古くからプログラマーの友人であるエディタで自動補完を試してみます。

関数の最初のパラメータ`first_name`を入力し、ドット(`.`)を入力してから、`Ctrl+Space`を押すと補完が実行されます。

しかし、悲しいことに、これはなんの役にも立ちません:

<img src="https://fastapi.tiangolo.com/img/python-types/image01.png">

### 型の追加

先ほどのコードから一行変更してみましょう。

以下の関数のパラメータ部分を:

```Python

///

## Multiple models { #multiple-models }

Here's a general idea of how the models could look like with their password fields and the places where they are used:

{* ../../docs_src/extra_models/tutorial001_py310.py hl[7,9,14,20,22,27:28,31:33,38:39] *}


/// info

    // evict 9, 1, 2, 10
    getAll(cache, asList(15));
    CacheTesting.drainRecencyQueues(cache);
    assertThat(keySet).containsExactly(0, 6, 7, 8, 15);

    // fill empty space
    getAll(cache, asList(9));
    CacheTesting.drainRecencyQueues(cache);
    assertThat(keySet).containsExactly(0, 6, 7, 8, 15, 9);

    // evict 6
    getAll(cache, asList(1));

    if (elements instanceof ImmutableCollection) {
      /*
       * TODO: When given an ImmutableList that's a sublist, copy the referenced
       * portion of the array into a new array to save space?
       */
      @SuppressWarnings("unchecked") // all supported methods are covariant
      ImmutableCollection<E> list = (ImmutableCollection<E>) elements;
      return list.asList();
    }