memory!

    The best practice in OkHttp 3 is to create a single OkHttpClient instance
    and share it throughout the application. Requests that needs a customized
    client should call `OkHttpClient.newBuilder()` on that shared instance.
    This allows customization without the drawbacks of separate connection
    pools.

      nullifyWriteOrder(e);

      return next != NullEntry.INSTANCE;
    }

    @Override
    @SuppressWarnings("unchecked")
    public boolean contains(Object o) {
      ReferenceEntry<K, V> e = (ReferenceEntry<K, V>) o;
      return e.getNextInWriteQueue() != NullEntry.INSTANCE;
    }

    @Override
    public boolean isEmpty() {

 * in Fess web templates, including date formatting, localization, file operations, and
 * query parameter handling.
 *
 * @since 1.0
 */
public class FessFunctions {
    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(FessFunctions.class);

    /** Prefix for geographic query parameters */
    private static final String GEO_PREFIX = "geo.";

  }

  @Retention(RetentionPolicy.RUNTIME)
  private @interface NotBlank {}

  /** Class for testing constructor, static method and instance method. */
  @SuppressWarnings("unused") // most are called by reflection
  private static class Prepender {

    private final String prefix;
    private final int times;

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[40:45] hl[40:45] *}

Here we use the `SessionDep` dependency (a `Session`) to add the new `Hero` to the `Session` instance, commit the changes to the database, refresh the data in the `hero`, and then return it.

### Read Heroes { #read-heroes }

然后你可以声明一个变量是 `Person` 类型：

{* ../../docs_src/python_types/tutorial010_py310.py hl[6] *}

接着，你会再次获得所有的编辑器支持：

<img src="/img/python-types/image06.png">

注意，这表示“`one_person` 是类 `Person` 的一个实例（instance）”。

它并不表示“`one_person` 是名为 `Person` 的类本身（class）”。

## Pydantic 模型 { #pydantic-models }

[Pydantic](https://docs.pydantic.dev/) 是一个用于执行数据校验的 Python 库。

你将数据的“结构”声明为带有属性的类。

每个属性都有一个类型。

	return env.Get("KUBERNETES_SERVICE_HOST", "") != ""
}

// IsBOSH returns true if minio is deployed from a bosh package
func IsBOSH() bool {
	// "/var/vcap/bosh" exists in BOSH deployed instance.
	_, err := os.Stat("/var/vcap/bosh")
	if osIsNotExist(err) {
		return false
	}

	// Log error, as we will not propagate it to caller
	internalLogIf(GlobalContext, err)

	return err == nil
}

import java.util.List;
import java.util.TimeZone;

import jcifs.Configuration;
import jcifs.DialectVersion;
import jcifs.ResolverType;

/**
 * Configuration implementation that delegates to another configuration instance.
 * Provides a wrapper mechanism for configuration objects with delegation pattern.
 *
 * @author mbechler
 */
public class DelegatingConfiguration implements Configuration {

- Deprecate the instance type beta label (`beta.kubernetes.io/instance-type`) in favor of its GA equivalent: `node.kubernetes.io/instance-type` ([#82049](https://github.com/kubernetes/kubernetes/pull/82049), [@andrewsykim](https://github.com/andrewsykim))

 */
public class CrawlingInfoService {

    private static final Logger logger = LogManager.getLogger(CrawlingInfoService.class);

    /**
     * Creates a new instance of CrawlingInfoService.
     */
    public CrawlingInfoService() {
    }

    /**
     * Behavior handler for CrawlingInfoParam entities.
     * Used to perform database operations on crawling session parameters.