10 2.6. Joins Between Tables … 12 2.7. Aggregate Functions … 14 2.8. Updates … 16 2.9. Deletions … 17 Advanced Features … 18 3.1. Introduction … 18 3.2. Views … 18 3.3. Foreign Keys … 18 3.4. Transactions 4 … 2875 E.8. Release 17.3 … 2876 E.9. Release 17.2 … 2882 E.10. Release 17.1 … 2883 E.11. Release 17 … 2889 E.12. Prior Releases … 2910 Additional Supplied Modules and Extensions … 2911 F.1. amcheck — server’s file system … 2978 F.16. fuzzystrmatch — determine string similarities and distance … 2981 F.17. hstore — hstore key/value datatype … 2986 F.18. intagg — integer aggregator and enumerator … 2995

## PostgreSQL 17beta1 Documentation The PostgreSQL Global Development Group ## PostgreSQL 17beta1 Documentation The PostgreSQL Global Development Group Copyright $ \copyright $ 1996–2024 The PostgreSQL Tables ..... 12 2.7. Aggregate Functions ..... 14 2.8. Updates ..... 16 2.9. Deletions ..... 17 3. Advanced Features ..... 18 3.1. Introduction ..... 18 3.2. Views ..... 18 3.3. Foreign Keys Parallel Safety ..... 580 Server Administration ..... 582 16. Installation from Binaries ..... 590 17. Installation from Source Code ..... 591 17.1. Requirements ..... 591 17.2. Getting the Source

PostgreSQL 17beta1 Documentation The PostgreSQL Global Development Group ## PostgreSQL 17beta1 Documentation The PostgreSQL Global Development Group Copyright $ \copyright $ 1996–2024 The PostgreSQL 15 2.9. Deletions ..... 15 3. Advanced Features ..... 17 3.1. Introduction ..... 17 3.2. Views ..... 17 3.3. Foreign Keys ..... 17 3.4. Transactions ..... 18 3.5. Window Functions ..... Parallel Safety ..... 549 Server Administration ..... 551 16. Installation from Binaries ..... 558 17. Installation from Source Code ..... 559 17.1. Requirements ..... 559 17.2. Getting the Source

# Modern C++ Tutorial: C++11/14/17/20 On the Fly Changkun Ou (hi[at]changkun.de) Last update: May 7, 2023 ## Notice The content in this PDF file may outdated, please check our website or GitHub repository International License. https://creativecommons.org/licenses/by-nc-nd/4.0/ # Modern C++ Tutorial C++11/14/17/20 On the Fly The Fastest Guide towards Modern C++ ![Image](/uploads/documents/3/9/3/6/393634af0 Enhancements 13 2.1 Constants 13 nullptr 13 constexpr 15 2.2 Variables and initialization 17 if-switch 17 Initialize list 18 Structured binding 20 2.3 Type inference 20 auto 21 decltype 22

# 现代 C++ 教程：高速上手 C++11/14/17/20 欧长坤 (hi[at]changkun.de) 最后更新 2023 年 5 月 7 日- ff6ee89 注意 此 PDF 的内容可能过期，请检查本书网站以及 GitHub 仓库以获取最新内容。 ## 版权声明 本书系欧长坤著，采用“知识共享署名-非商业性使用-禁止演绎4.0国际许可协议(CC BY-NC-ND)”进行许可 BY-NC-ND)”进行许可。https://creativecommons.org/licenses/by-nc-nd/4.0/ Everything is compiler. 现代 C++教程 高速上手 C++11/14/17/20 The Fastest Guide towards Modern C++ ![Image](/uploads/documents/9/e/7/a/9e7a870727137f72ace46a41c6adbe86/p1_1 可维护性 …… 82 可移植性 …… 83 ## 序言 ## 引言 C++ 是一个用户群体相当大的语言。从 C++98 的出现到 C++11 的正式定稿经历了长达十年多之久的积累。C++14/17 则是作为对 C++11 的重要补充和优化，C++20 则将这门语言领进了现代化的大门，所有这些新标准中扩充的特性，给 C++ 这门语言注入了新的活力。那些还在坚持使用传统 C++（本书把 C++98

val覆盖旧值创建并写入值m.insert_or_assign(key, val)覆盖旧值创建并写入值（更高效，C++17 新增）m.at(key) = val覆盖旧值抛出 out_of_range 异常判断if 类型 • (*it).second; // V 类型 ## map 的遍历：用 C++17 range-based loop • 和 vector 等 STL 容器一样，map 也支持 C++17 的 range-based loop 语法进行遍历。 • for (auto tmp: m) • 由于刚刚说了，map 真正的“元素类型”是 的定义，里面只有两个成员： • struct pair { • T1 first; T2 second; •}; ## map 的遍历：用 C++17 range-based loop • 所以 for (auto tmp: m) 这里 tmp 的类型是 pair。 - 如果要单独访问 K 或者 V 怎么办？我们看一下

## ROS入门 21讲 ### 17. ROS中的坐标系管理系统 主讲人：古月 ## 机器人中的坐标变换 $$ ^{A}P={}_{B}^{A}R^{B}P+{}^{A}P_{B O R G}. $$ $$ {^{A}P}={_{B}^{A}T}{^{B}P}. $$ $$ \left[\begin{array}{c}{^{A}P}\\ {1}\end{array}\ri

Adding Classpath Dependencies ..... 15 Maven ..... 15 Gradle ..... 16 4.4.5. Writing the Code ..... 17 The @RestController and @RequestMapping Annotations ..... 18 The @SpringBootApplication Annotation Using the CLI 602 16.2.1. Initialize a New Project 604 16.2.2. Using the Embedded Shell 605 17. Build Tool Plugins 606 17.1. Spring Boot Maven Plugin 606 17.2. Spring Boot Gradle Plugin 606 ..... 826 .A.15. Devtools Properties ..... 858 .A.16. Docker Compose Properties ..... 859 .A.17. Testcontainers Properties ..... 860 .A.18. Testing Properties ..... 860 Appendix B: Configuration

.. 526 16.2.1. Initialize a New Project ..... 528 16.2.2. Using the Embedded Shell ..... 529 17. Build Tool Plugins ..... 530 17.1. Spring Boot Maven Plugin ..... 530 17.2. Spring Boot Gradle requirement for XML configuration. #### 4.2. System Requirements Spring Boot 3.0.4 requires Java 17 and is compatible up to and including Java 19. Spring Framework 6.0.6 or above is also required. Explicit “classic” Java development tools or installed as a command line tool. Either way, you need Java SDK v17 or higher. Before you begin, you should check your current Java installation by using the following