the
解决psql: error: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory Is the server running locally and accepting connections on that socket?
pgsql启动后执行psql显示报错： psql: error: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory Is the server ru ......
The JAVA_HOME environment variable is not defined correctly,解决
k8s集成jenkins,在进行子工程mvn clean install过程中报截图中错误,经过排除是之前在系统管理->系统配置中,添加的JAVA_HOME环境变量不对,可能目前我使用的jenkins是通过k8sPod生成的,并不是直接在主机上安装的,所以此处填的JAVA_HOME jenkins识 ......
ICPC2021Kunming G Find the Maximum 题解
Question Find the Maximum 给出一个树，每个点有一个权值 \(b_n\)，求一条树上路径 \(V\)，要求 \(\frac{\sum_{u\in V (-x^2+b_u x)}}{|V|}\) 最大，其中 \(x\) 是自己选择的一个树 Solution 先转化一下 \(\f ......
IDX10720: Unable to create KeyedHashAlgorithm for algorithmHS256'. the key size must be greater than: '256' bits, key has '152' bits. Arg ParamName Name
概述 这个问题出现是在升级自己项目.NET8版本出现的；升级后重新登陆 jwt创建token 报错，意思是密钥需要超过 256 bit，即 设定得密钥太短了 解决方案：密钥加长 水一篇。。。 ......
Only the invariant culture is supported in globalization-invariant mode. See https://aka.ms/GlobalizationInvariantMode for more information
错误信息：全球化不变模式只支持不变文化。看见https://aka.ms/GlobalizationInvariantMode了解更多信息 修改引用配置即可：<InvariantGlobalization>true</InvariantGlobalization> 改为false Only the ......
cmd黑窗口报错：输入行太长（The input line is too long）
1.情景展示 如上图所示，当我在命令提示符窗口执行命令时，报错： The input line is too long.The syntax of the command is incorrect. 怎么办？ 2.具体分析 要运行命令的所在路径太长了，我们只需将需要启动的bat文件所在目录迁移至磁盘 ......
使用idea执行testng单元测试时，控制台报 no tests found in the class xxx 异常
我遇到的情况是，使用idea在一个测试类中进行测试的时候，前一个单元测试用例还正常执行，到下一个就报了no test found in the class xxx 原因暂时未知，但目前来看是idea的问题，可以尝试点击File->Invalidate Caches...然后在弹窗点击Invalida ......
cocoaPod 执行 pod install 时出现警告：The `XX [Release]` target overrides the `CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES` build setting defined in `xcconfig'.
最近执行 Pod install 安装命令时，控制台输出警告信息： [!] The `XXX [Debug]` target overrides the `CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES` build setting def ......
初中英语优秀范文100篇-040My View on the Internet-网络之我见
初中英语优秀范文100篇-040My View on the Internet-网络之我见 PDF格式公众号回复关键字:SHCZFW040 记忆树 1 Now many of my classmates like to surf the Internet in their free time. 翻译 ......
idea在build阶段出现错误以下错误：java: Internal error in the mapping processor: java.lang.NullPointerException，导致项目无法启动。
解决方案： 打开idea的File --> Setting --> Build,Execution,Deployment --> Compiler --> User-local build 加上参数： -Djps.track.ap.dependencies=false ......
You should consider upgrading via the 'C:\Users\榕宝\PycharmProjects\djangoProject\venv\Scripts\python.exe -m pip install --upgrade pip' command.
python -m pip install --upgrade pip ......
完美解决SqlServer2012启动报错（cannot find one or more components.Please reinstall the application。）
原因：默认安装在C:\Program Files (x86)\Microsoft Visual Studio 10.0文件夹，以支持sql server2012.（我之前不小心把这个文件夹删除了）。 解决方案：下载了visual studio 2010 Isolated shell 完美解决问题，下 ......
[LeetCode] 2660. Determine the Winner of a Bowling Game
You are given two 0-indexed integer arrays player1 and player2, that represent the number of pins that player 1 and player 2 hit in a bowling game, re ......
【五期李伟平】CCF-A（S&P'20）The Value of Collaboration in Convex Machine Learning with Differential Privacy
Nan W., et al. “The Value of Collaboration in Convex Machine Learning with Differential Privacy.” 2020 IEEE Symposium on Security and Privacy. 304-317 ......
PyQt报错：Cannot load backend 'Qt5Agg' which requires the 'qt5' interactive framework, as 'headless' is currently running
PyQt报错：Cannot load backend 'Qt5Agg' which requires the 'qt5' interactive framework, as 'headless' is currently running 问题描述 在远程链接ubuntu虚拟机进行开发时，报错。 解决 ......
jumpserver连接ecs实例报错：UNREACHABLE! => {"changed": false, "msg": "Failed to connect to the host via ssh: ssh_exchange_identification: Connection closed by remote host", "unreachable": true
报错分析思路： 1.是ssh密钥设置有没有对接 2.防火墙拦截问题 3.用户设置问题 4.sshd配置问题 问题解决： 无法与221.229.216.39端口35846进行协商：找不到匹配的主机密钥类型。他们提供的是：ssh-rsa、ssh-dss [preauth] 在sshd配置中加上ssh-r ......
CF768G The Winds of Winter题解
我们考虑暴力咋做，每次得到一个森林之后，必定是从最大的树上摘一棵子树，挪到最小的树上，所以此时的答案为 \(max(siz_{mx}-x,siz_{mn}+x,siz_{次大值} )\)，于是发现 \(x=\frac{siz_{mx}-siz_{mn}}{2}\) 时答案最优，所以只需找到这个值的前 ......
[引]Power Automate Use variables and the % notation
Variable manipulation and the % notation - Power Automate | Microsoft Learn 变量操作和 % 表示法 - Power Automate | Microsoft Learn In this articleHardcoded va ......
解决报错： Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
这个错误表明 Docker 客户端无法与 Docker 守护程序通信。这可能有几种原因： Docker 守护程序未运行： 您需要确保 Docker 守护程序正在后台运行。可以使用以下命令来启动 Docker 守护程序： sudo service docker start 或者 sudo system ......
POLIR-Int-Generative AI in 2024: The 6 most important consumer tech trends for next year
Generative AI in 2024: The 6 most important consumer tech trends for next year Qualcomm executives reveal key trends in AI, consumer technology and mo ......
致21岁的自己——May all the beauty be blessed.
[错峰跨年第一弹]长文预警，本文长达不知道多少字(本文同时发布于博客园)先说一下，博客园快要倒闭了233说起博客园又得提一嘴他的好朋友csdn，so f**k you csdn，盗我博客不得house每年到这个时候都是最忙的时候，期末周(月)加课设，画图画得焦头烂额，机械工程狗都不学。这一年倒是身体 ......
Spring Security without the WebSecurityConfigurerAdapter
ENGINEERING | ELEFTHERIA STEIN-KOUSATHANA | FEBRUARY 21, 2022 | ... In Spring Security 5.7.0-M2 we deprecated the WebSecurityConfigurerAdapter, as we ......
How to Master the Popular DBSCAN Clustering Algorithm for Machine Learning
Overview DBSCAN clustering is an underrated yet super useful clustering algorithm for unsupervised learning problems Learn how DBSCAN clustering works ......
The 2022 ICPC Asia-East Continent Final Contest (EC-Final 2022)
比赛链接 没做完。 A. Coloring 有 \(n\) 个元素，第 \(i\) 个元素有价值 \(w_i\)，颜色 \(c_i\)。给定 \(s\)，初始时只有 \(c_s=1\)，其余 \(c_i\) 均为 \(0\)。 可以进行任意操作：选择一个 \(1 \le i \le n\)，花费 \ ......
SP2-0618: Cannot find the Session Identifier. Check PLUSTRACE role is enabled SP2-0611: Error enabling STATISTICS report
报错信息： SP2-0618: Cannot find the Session Identifier. Check PLUSTRACE role is enabledSP2-0611: Error enabling STATISTICS report 说明： Oracle下普通用户缺少set aut ......
How to permanently delete a file stored in GIT (both from the local and remote repositories)?
First run git filter-branch -f --index-filter "git rm -rf --cached --ignore-unmatch FOLDERNAME" -- --all Then shrink the .git folder rm -rf .git/refs/ ......
CF1178G The Awesomest Vertex
CF1178G The Awesomest Vertex 给定一棵根为 \(1\) 的有根树，每个节点有两个权值 \(a[i]\) 和 \(b[i]\) 。定义 \(R(v)\) 为 \(v\) 祖先的集合（包括自己），则一个节点 \(v\) 有多棒取决于其真棒程度，真棒程度是这样定义的： \[\l ......
The 1st Universal Cup. Stage 0: Nanjing (Trial Contest)
比赛链接 题面懒得写了。 A. Stop, Yesterday Please No More 袋鼠移动相当于边界和洞移动。通过模拟可以得出：不考虑洞，移动后剩余袋鼠的矩形。以及假设洞在原点，移动后形成的轨迹形状。 枚举洞在哪个位置，多干掉的袋鼠就是两个几何图形的交。由于洞的移动轨迹较复杂，我们考虑让 ......
Maven-Introduction to the Dependency Mechanism | Maven实战--- dependencies与dependencyManagement的区别
Maven – Introduction to the Dependency Mechanism https://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html#:~:text=The de ......