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@@ -26,7 +26,7 @@ RSS使用仓库的release RSS [链接](https://github.com/wanghenshui/cppweeklyn
 | [二十一](./posts/021.md) | [二十二](./posts/022.md) | [二十三](./posts/023.md) | [二十四](./posts/024.md) | [二十五](./posts/025.md) | [二十六](./posts/026.md) | [二十七](./posts/027.md) | [二十八](./posts/028.md) | [二十九](./posts/029.md) | [三十期](./posts/030.md) |
 | [三十一](./posts/031.md) | [三十二](./posts/032.md) | [三十三](./posts/033.md) | [三十四](./posts/034.md) | [三十五](./posts/035.md) | [三十六](./posts/036.md) | [三十七](./posts/037.md) | [三十八](./posts/038.md) | [三十九](./posts/039.md) | [四十期](./posts/040.md) |
 | [四十一](./posts/041.md) | [四十二](./posts/042.md) | [四十三](./posts/043.md) | [四十四](./posts/044.md) | [四十五](./posts/045.md) | [四十六](./posts/046.md) | [四十七](./posts/047.md) | [四十八](./posts/048.md) | [四十九](./posts/049.md) | [五十期](./posts/050.md) |
-| [五十一](./posts/051.md) | [五十二](./posts/052.md) | [五十三](./posts/053.md) |  |  |  |  |  |  |  |
+| [五十一](./posts/051.md) | [五十二](./posts/052.md) | [五十三](./posts/053.md) |  [五十四](./posts/054.md)|  |  |  |  |  |  |
 
 
 

diff --git a/posts/054.md b/posts/054.md
@@ -0,0 +1,193 @@
+---
+layout: post
+title:  第54期
+---
+
+# C++ 动态新闻推送 第54期
+
+
+从[reddit](https://www.reddit.com/r/cpp/)/[hackernews](https://news.ycombinator.com/)/[lobsters](https://lobste.rs/)/[meetingcpp](https://www.meetingcpp.com/blog/blogroll/items/Meeting-Cpp-Blogroll-321.html)摘抄一些c++动态
+
+
+[周刊项目地址](https://github.com/wanghenshui/cppweeklynews)｜[在线地址](https://wanghenshui.github.io/cppweeklynews/) ｜[知乎专栏](https://www.zhihu.com/column/jieyaren) |[腾讯云+社区](https://cloud.tencent.com/developer/column/92884)
+
+弄了个qq频道，[手机qq点击进入](https://qun.qq.com/qqweb/qunpro/share?_wv=3&_wwv=128&inviteCode=xzjHQ&from=246610&biz=ka)
+
+欢迎投稿，推荐或自荐文章/软件/资源等，请[提交 issue](https://github.com/wanghenshui/cppweeklynews/issues)
+
+---
+
+## 资讯
+
+标准委员会动态/ide/编译器信息放在这里
+
+[编译器信息最新动态推荐关注hellogcc公众号 本周更新 2022-03-16 第141期](https://github.com/hellogcc/osdt-weekly/blob/master/weekly-2022/2022-03-16.md)
+
+
+
+## 文章
+
+- [Optimizing Oklab gradients](https://aras-p.info/blog/2022/03/11/Optimizing-Oklab-gradients/)
+
+看不懂说的啥
+
+- [To Save C, We Must Save ABI](https://thephd.dev/to-save-c-we-must-save-abi-fixing-c-function-abi)
+
+讨论了ABI带来的兼容问题
+
+- [Optimizing code to darken a bitmap, part 5](https://devblogs.microsoft.com/oldnewthing/20220311-00/?p=106340)
+
+第五版优化用上了arm的sse指令重写
+
+- [New C++23 range adaptors](https://mariusbancila.ro/blog/2022/03/16/new-cpp23-range-adaptors/)
+
+不多说，列代码
+
+join_view
+```c++
+using namespace std::ranges;
+auto l_as_string = []<typename R>(R range){
+   return std::string(std::begin(range), std::end(range));
+};
+std::vector<std::string> words{"this", "is", "a", "demo"};
+auto text = l_as_string(words | views::join);
+std::cout << text << '\n';//thisisademo
+```
+新接口
+```c++
+auto text = l_as_string(words | views::join_with(' ')); //"this is a demo"
+```
+
+zip_view
+```c++
+std::array<int, 4> n{ 1, 2, 3, 4 };
+std::vector<std::string> w{ "one","two","three" };
+auto z1 = views::zip(n, w) // { (1, "one"), (2, "two"), (3, "three") }
+for(auto t : z1)
+   std::cout << std::get<0>(t) << '-' 
+             << std::get<1>(t) << '\n';
+```
+
+
+- [overload 167](https://accu.org/journals/overload/30/167/overload167.pdf)
+这是个期刊，每期都会录入几篇文章，文章很长。内容标题是
+    - What are you optimizing for? 没啥说的
+    - Revisiting Data-Oriented Design
+    - An Associative Container for Non-bash Shell Scripts
+    - C++20 Benefits: Consistency With Ranges
+  
+没啥值得说的
+
+- [PartialExecuter: Reducing WebAssembly size by exploring all executions in LLVM](https://medium.com/leaningtech/partialexecuter-reducing-webassembly-size-by-exploring-all-executions-in-llvm-f1ee295e8ba)
+
+讲llvm给wasm减少体积
+
+- [libriscv: Multiprocessing for Compute Functions](https://fwsgonzo.medium.com/multiprocessing-in-a-risc-v-emulator-ce910122f4f1)
+
+开发simulater遇到的问题 代码在[这里](https://github.com/fwsGonzo/libriscv/tree/multiprocessing)
+
+
+- [The Discovery and Exploitation of CVE-2022-25636](https://nickgregory.me/linux/security/2022/03/12/cve-2022-25636/)
+
+讲作者怎么发现的这个缺陷以及复现过程，做安全的朋友可以看看。简单来说就是数组边界没检查，但触发这个场景构造了挺多东西
+
+## 视频
+
+- [C++ Weekly- Ep 315 - constexpr vs static constexpr](https://www.youtube.com/watch?v=IDQ0ng8RIqs)
+
+尽量用static constexpr，编译期。快。有人用压测挑战了up主，说static constexpr并不比constexpr快，并给了一个bench链接，这个视频是作者的调试过程。简单来说，那个bench场景有问题，数据小，数据局部性太高，constexpr默认是栈变量，cache友好的结果，实际上数据量一大 static constexpr明显优于constexpr
+
+### 更新一波cppcon 2021
+
+- [Using Clang LibASTMatchers for Compliance in Codebases - Jonah Jolley - CppCon 2021](https://www.youtube.com/watch?v=icvNkYextOo)
+
+对clang感兴趣的可以看看
+
+- [Back to Basics: Smart Pointers and RAII - Inbal Levi - CppCon 2021](https://www.youtube.com/watch?v=07rJOzFRs6M)
+
+讲所有权的。感兴趣的可以看看
+
+- [Code Size Compiler Optimizations and Techniques for Embedded Systems - Aditya Kumar - CppCon 2021](https://www.youtube.com/watch?v=JOBs3l1jAkw)
+
+嵌入式场景编译器优化减小程序体积
+体积影响分发。从二进制角度观测/评估哪里可以省掉，用[bloaty](https://github.com/google/bloaty)查
+比如strip 减少内联 (`__attribute__((noinline))`)/模板实例化以及二进制工具修改
+编译选项，-Os -flto -Wl,--strip-all (不要-g) -fno-unroll-loops -fno-execption -fno-rtti
+以及编译器本身提供的减少体积的选项，比如thin-lto(llvm) -fmerge-all-constant -mllvm hot-cold-split
+
+代码组织上，不要继承不要类不要lambda，不要复制，实现移出头文件，数据结构简单就好，算法用简单的，不需要考虑性能问题，够用，拷贝尽量用memcpy
+
+还有一些邪魔外道我没有列出。后面直接贴出ppt链接，有兴趣的可以点视频看看
+
+- [Debugging Assembly Language and GPU Kernels in Visual Studio Code - Julia Reid - CppCon 2021](https://www.youtube.com/watch?v=A1Pu1yXfI94)
+
+谁用vscode调代码啊，你用吗，我不用。
+
+- 推荐观看 [Embracing `noexcept` Operators and Specifiers Safely - John Lakos - CppCon 2021](https://www.youtube.com/watch?v=3GwNjGMKBtI)
+
+如果一个类只声明不实现，不能保证成员函数是noexpect(true)的（析构函数除外），之前咱们也聊过zero cost execption相关
+这个视频讨论了noexcept的方方面面。比较深入。值得一看。
+
+- [Embracing (and also Destroying) Variant Types Safely - Andrei Alexandrescu - CppCon 2021](https://www.youtube.com/watch?v=va9I2qivBOA&t=94s)
+
+实现variant/访问需要注意一些问题。AA手把手带你写代码
+
+- [Cool New Stuff in Gdb 9 and Gdb 10 - Greg Law - CppCon 2021](https://www.youtube.com/watch?v=xSnetY3eoIk)
+
+介绍gdb新特性，新命令，和python更好的交互等等。没细看
+
+- [Finding Bugs Using Path-Sensitive Static Analysis - Gabor Horvath - CppCon 2021](https://www.youtube.com/watch?v=B3kUHgTsbxc)
+
+VS的静态检测工具，分析分支，跟踪指针生命周期
+
+- [Up to Code - David Sankel - CppCon 2021](https://www.youtube.com/watch?v=r_U9YFPWxEE&t=157s)
+
+讲哲学的，太抽象了。没看
+
+- [C++20’s ＜chrono＞ Calendars and Time Zones in MSVC - Miya Natsuhara - CppCon 2021](https://www.youtube.com/watch?v=Dq7rqjatxz8)
+
+msvc的chrono实现。如何支持date timezone等等，API走读(评论区评论非常多。难道是妹子解说就人多吗)
+
+- [Custom Views for the Rest of Us - Jacob Rice - CppCon 2021](https://www.youtube.com/watch?v=P9XXJuAYhMQ) 
+
+讲range view的。对相关概念感兴趣的可以看看
+
+- [Back To Basics: Debugging Techniques - Bob Steagall - CppCon 2021](https://www.youtube.com/watch?v=M7fV-eQwxrY)
+
+手把手教你解bug
+
+- ["unit"_test: Implementing a Macro-free Unit Testing Framework from Scratch in C++20 - Kris Jusiak](https://www.youtube.com/watch?v=-qAXShy1xiE)
+
+介绍boostext.ut 这个库用用户自定义前缀 UDL来实现单测的模型，而不是用宏展开。比较优雅。之前也介绍过
+
+- [Zen and the Art of Code Lifecycle Maintenance - Phil Nash - CppCon 2021](https://www.youtube.com/watch?v=qGnF4O5nUF4)
+
+讲哲学的我是真听不进去
+
+### cppp
+
+- [Exceptional C++ - Victor Ciura - CPPP 2021](https://www.youtube.com/watch?v=PSgY2ZLSrY0)
+
+介绍SEH的
+
+- [Just Enough Assembly for Compiler Explorer - Anders Schau Knatten - CPPP 2021](https://www.youtube.com/watch?v=188ACW-efHE)
+
+手把手带你看汇编。这个视频好像推了好几次了。真的值得一看
+
+
+## 开源项目需要人手
+
+- [asteria](https://github.com/lhmouse/asteria) 一个脚本语言，可嵌入，长期找人，希望胖友们帮帮忙，也可以加群384042845和作者对线
+- [pika](https://github.com/OpenAtomFoundation/pika) 一个nosql 存储， redis over rocksdb，非常需要人贡献代码胖友们， 感兴趣的欢迎加群294254078前来对线
+
+## 新项目介绍/版本更新
+
+-   [Simple 3D math study ](https://github.com/oWASDo/3DMath)
+
+## 工作招聘
+
+---
+
+看到这里或许你有建议或者疑问或者指出错误，请留言评论! 多谢!  你的评论非常重要！也可以帮忙点赞收藏转发！多谢支持！
+
+[本文永久链接](https://wanghenshui.github.io/cppweeklynews/posts/054.html)