Course15452

Course Introduction："Comprehensive Analysis of Java Annotations" is an important online Java tutorial. In project development, annotations are used everywhere. The use of annotations simplifies the code and reduces the programmer's workload. This course leads students to have a comprehensive understanding of Java annotations, including why annotations are used, common annotations in Java, classification of annotations and how to customize annotations. Finally, a practical case is used to demonstrate the application of annotations in actual projects.

Course5093

Course Introduction：Bootstrap is a simple, intuitive, and powerful front-end development framework that can make web development faster and simpler.

Course22673

Course Introduction：HTTP protocol (HyperText Transfer Protocol, Hypertext Transfer Protocol) is the most widely used network transmission protocol on the Internet. All WWW files must comply with this standard. From the beginning of this lesson, we will learn the details of HTTP.

Course1373

Course Introduction：Django DRF source code analysis includes: 1 Front-end and back-end separation mode 2 restful interface specification 3 Simple applications of CBV 4 Object-oriented and reflection supplement 5 CBV source code analysis 6 CBV source code analysis 2 7 APIView source code analysis 8 Serialization and deserialization of DRF 9 Supplementary information on the use of serializers 10 Serializer save operation 11 Interface implementation based on APIView 12 save method completes updating data 13 ModelSerializer 14GenericAPIView 15GenericAPIView(2) 16 min mixed class 17 Re-encapsulation of Minin mixed classes 18ViewSet 19 ModelViewSet 20 routing components

Course2118

Course Introduction：If you have any questions, add WeChat: Le-studyg; this course is a course for Swoole extension, aiming to deeply explore the Swoole multi-process model and its implementation principles. Through this course, learners will understand the concepts, principles and applications of the multi-process model in the Swoole framework. The course content covers the basic concepts of the Swoole multi-process model, inter-process communication, process management, process pools, etc., helping learners comprehensively master the technical points of Swoole multi-process programming, so as to better apply it to actual projects. Through the study of this course, students will be able to have a deeper understanding of the Swoole multi-process model and provide strong support for the development of high-performance, high-concurrency network applications.

Course Introduction：币圈锁仓解锁步骤：1.查看解锁时间；2.确保满足解锁条件；3.在解锁时间前往平台或钱包解锁；4.验证解锁；5.提取资产。遵守解锁时间、保持安全、了解解锁费用和注意税务影响。

2024-07-16 comment

Course Introduction：When we use CorelDRAW to design, in order to avoid confusion in typesetting and be affected by commands such as alignment and distribution, we will lock some objects to prevent them from being edited. Previously we introduced three methods of locking objects, and there are also three corresponding unlocking methods. Let us take a look together! The specific operations are as follows: 1. Unlock the right-click menu, select the unlocked object, right-click, and select [Unlock], which is applicable to a single unlock object. 2. Unlock the object menu, find [Object] in the upper menu and select [Lock]. There is [ There are two options: Unlock] and [Unlock All], which are suitable for unlocking single or all objects. 3. Layer Unlocking 1) Select [Docker - Object] in the upper [Window] to bring up the [Object Window] 2) Click on the image

2024-02-14 comment707

Course Introduction：要解锁 MySQL 中锁定的表，请执行以下步骤：确定锁定的表：使用 SHOW PROCESSLIST 命令。杀掉锁定线程：使用 KILL 命令。使用 UNLOCK TABLES 语句：使用 UNLOCK TABLES 语句解锁所有锁定的表。

2024-05-28 comment 0801

Course Introduction：Oracle 查询语句被锁定时，可通过以下步骤解锁：确定被锁会话 ID。终止被锁会话。验证解锁成功。如涉及多个表或会话，重复以上步骤。备份数据，避免解锁带来的数据丢失。考虑显式锁提示（NOWAIT/SKIP LOCKED）以防锁。

2024-05-21 comment 0878

Course Introduction：Oracle解锁表的方式：1. 直接连接数据库执行UNLOCK TABLE语句；2. 使用ORA_UNLOCK_TABLE函数；3. 查找并关闭持有锁的进程；4. 重启数据库服务器或使用Oracle Enterprise Manager工具。注意：解锁权限受限，意外终止进程可能导致表仍锁定，频繁解锁影响性能，建议使用其他锁定机制。

2024-05-21 comment423