and similar tools also use an **internal cache** when building the image, if a file hasn't changed since the last time building the container image, then it will **reuse the same layer** created the last time, instead of copying the file again and creating a new layer from scratch.

Just avoiding the copy of files doesn't necessarily improve things too much, but because it used the cache for that step, it can **use the cache for the next step**. For example, it could use the cache for the...

你可能會用到編輯器，請確保設定它使用你建立的相同虛擬環境（它可能會自動偵測到），以便你可以獲得自動完成和內嵌錯誤提示。

例如：

* [VS Code](https://code.visualstudio.com/docs/python/environments#_select-and-activate-an-environment)
* [PyCharm](https://www.jetbrains.com/help/pycharm/creating-virtual-environment.html)

/// tip

通常你只需要在建立虛擬環境時執行此操作**一次**。

///

## 退出虛擬環境 { #deactivate-the-virtual-environment }

當你完成工作後，你可以**退出**虛擬環境。

<div class="termy">

你可能会用到编辑器，请确保配置它使用与你创建的相同的虚拟环境（它可能会自动检测到），以便你可以获得自动补全和内联错误提示。

例如：

* [VS Code](https://code.visualstudio.com/docs/python/environments#_select-and-activate-an-environment)
* [PyCharm](https://www.jetbrains.com/help/pycharm/creating-virtual-environment.html)

/// tip | 提示

通常你只需要在创建虚拟环境时执行此操作**一次**。

///

## 退出虚拟环境 { #deactivate-the-virtual-environment }

当你完成工作后，你可以**退出**虚拟环境。

<div class="termy">

		}
		res, ok := val.([]string)
		if !ok {
			return nil, errors.New("unexpected policy type")
		}
		return res, nil
	}
	return getPolicies()
}

// AddUsersToGroup - adds users to group, creating the group if needed.
func (store *IAMStoreSys) AddUsersToGroup(ctx context.Context, group string, members []string) (updatedAt time.Time, err error) {
	if group == "" {
		return updatedAt, errInvalidArgument
	}

        assertEquals(0x0004, Smb2EncryptionContext.CIPHER_AES_256_GCM, "AES-256-GCM constant should be defined");

        // Test creating context with AES-256 cipher IDs
        byte[] key256 = new byte[32]; // 256-bit key
        new SecureRandom().nextBytes(key256);

        Smb2EncryptionContext context256CCM =

  public static <E> Builder<E> builderWithExpectedSize(int expectedSize) {
    checkNonnegative(expectedSize, "expectedSize");
    return new ImmutableList.Builder<>(expectedSize);
  }

  /**
   * A builder for creating immutable list instances, especially {@code public static final} lists
   * ("constant lists"). Example:
   *
   * {@snippet :
   * public static final ImmutableList<Color> GOOGLE_COLORS =

            consumer.accept(runtime);
        }
    }

    /**
     * Represents a text fragment for URL-based text highlighting.
     * Used for creating browser text fragment URLs (#:~:text=...).
     */
    public static class TextFragment {
        /** Optional prefix text before the target */
        private final String prefix;

      // .get() and therefore this is equivalent to calling .get() and unpacking the exceptions like
      // we do below (just much faster because it is a single field read instead of a read, several
      // branches and possibly creating exceptions).
      Object v = ((AbstractFuture<?>) future).value();
      if (v instanceof Cancellation) {
        // If the other future was interrupted, clear the interrupted bit while preserving the cause

      }
    }
  }

  /**
   * A means for changing an Ordering into another Ordering. Each instance is responsible for
   * creating the alternate Ordering, and providing a List that is known to be ordered, based on an
   * input List known to be ordered according to the input Ordering.
   */
  private enum OrderingMutation {
    REVERSE {

      }
    }
  }

  /**
   * A means for changing an Ordering into another Ordering. Each instance is responsible for
   * creating the alternate Ordering, and providing a List that is known to be ordered, based on an
   * input List known to be ordered according to the input Ordering.
   */
  private enum OrderingMutation {
    REVERSE {