11.订阅者Subscriber的编程实现 主 讲 人 ： 古 月 话题模型 创建订阅者代码（C++） • • • • pose_subscriber.cpp 配置订阅者代码编译规则 • • CMakeLists.txt 编译并运行订阅者 创建订阅者代码（Python） pose_subscriber.py • • • • 感谢观看 怕什么真理无穷，进一寸有一寸的欢喜

Decorators RingPHP Handlers Using a handler Creating a handler Testing Guzzle Clients Mock Subscriber History Subscriber Mock Adapter Test Web Server FAQ Why should I use Guzzle? Does Guzzle require cURL? the client. Log Subscriber [https://github.com/guzzle/log-subscriber] Logs HTTP requests and responses sent over the wire using customizable log message templates. OAuth Subscriber [https://github. com/guzzle/oauth-subscriber] Signs requests using OAuth 1.0. Cache Subscriber [https://github.com/guzzle/cache-subscriber] Implements a private transparent proxy cache that caches HTTP responses. Retry

containing cookies to send in the request and start a new cookie session. • Set to a GuzzleHttp\Subscriber\CookieJar\CookieJarInterface object to use an existing cookie jar. 10 Chapter 1. User guide Guzzle GuzzleHttp\Event\SubscriberInterface. Types array Default None use GuzzleHttp\Subscriber\History; use GuzzleHttp\Subscriber\Mock; use GuzzleHttp\Message\Response; $history = new History(); $mock = new and event subscribers to all requests created by the client. Important: Every event listener or subscriber added to a client will be added to every request created by the client. use GuzzleHttp\Client;

Observable(function subscribe(subscriber) { subscriber.next("My First Observable") }); We have created an observable and added a message “My First Observable” using subscriber.next method available { Observable } from 'rxjs'; var observer = Observable.create(function subscribe(subscriber) { subscriber.next("My First Observable") }); 4. RxJS — Observables RxJS 16 import { Observable } from 'rxjs'; var observer = new Observable(function subscribe(subscriber) { subscriber.next("My First Observable") }); observer.subscribe(x => console.log(x)); When

in C++ CppCon 2024-09-19 40Composing functions void unsubscribe_from_mailing_list(userID id) { subscriber_list.remove( lookup_user(id).email ); } Jonathan Müller — @foonathan Back to Basics: Functional in C++ CppCon 2024-09-19 41Composing functions void unsubscribe_from_mailing_list(userID id) { subscriber_list.remove( lookup_user(id).email ); } Composition chain: UserID -> User -> Email Jonathan unsubscribe_from_mailing_list(UserID id) { std::optional user = lookup_user(id); if (user) { subscriber_list.remove(user->email); } } Jonathan Müller — @foonathan Back to Basics: Functional Programming

Publish/Subscribe Systems publisher publisher publisher publisher subscriber notify() subscriber notify() subscriber notify() Subscription management Event Service publish publish notify() supported. The subscriber receives pending messages from its subscription and acknowledges each one to the Pub/Sub service. When a message is acknowledged by the subscriber, it is removed

onTrial method: if ($user->onTrial()) { // } To determine if the user was once an active subscriber, but has cancelled their subscription, you may use the cancelled method: if ($user->cancelled()) function onUserLogout($event) { // } /** * Register the listeners for the subscriber. * * @param Illuminate\Events\Dispatcher $events * @return array */ public rLogout'); } } Once the subscriber has been defined, it may be registered with the Event class. $subscriber = new UserEventHandler; Event::subscribe($subscriber); You may also use the Laravel

Versions 10 Upgrading from older versions 1. Due to ARTEMIS-3851 the queue created for an MQTT 3.x subscriber using CleanSession=1 is now non- durable rather than durable. This may impact security-settings optionally be durable which means they retain a copy of each message sent to the topic until the subscriber consumes them - even if the server crashes or is restarted in between. Non-durable subscriptions when a message is sent to address.foo it will be routed to each queue for each subscriber and therefore each subscriber will get every message. These queues are often referred to as subscription queues

caches. Upgrading from older versions 1. Due to ARTEMIS-3851 the queue created for an MQTT 3.x subscriber using CleanSession=1 is now non-durable rather than durable. This may impact security-settings optionally be durable which means they retain a copy of each message sent to the topic until the subscriber consumes them - even if the server crashes or is restarted in between. Non-durable subscriptions when a message is sent to address.foo it will be routed to each queue for each subscriber and therefore each subscriber will get every message. These queues are often referred to as subscription queues

caches. Upgrading from older versions 1. Due to ARTEMIS-3851 the queue created for an MQTT 3.x subscriber using CleanSession=1 is now non-durable rather than durable. This may impact security-settings optionally be durable which means they retain a copy of each message sent to the topic until the subscriber consumes them - even if the server crashes or is restarted in between. Non-durable subscriptions when a message is sent to address.foo it will be routed to each queue for each subscriber and therefore each subscriber will get every message. These queues are often referred to as subscription queues