526互联

morning four the in

The 2021 ICPC Asia Macau Regional Contest

\(C. Laser Trap\) 根据题意不难判断出需要极角排序，然后对于每个点寻找更小的一个 \(180\) 度的点数。即使听说是用双指针实现查找依旧没什么思路。后来看了别人的实现方法发现确实比较简单，甚至只需要维护极角就可以了。 const long double pi=acosl(-1); ......
Regional Contest Macau 2021 ICPC

The Dance After Last Dance - CSP2023 游记

波神留我看斜阳，唤起层层细浪。 高三也不过是这样，在银杏叶黄的烂漫的季节，骑车回家的路上总能望见绯红的轻云，但银杏叶下也缺不了成群结队的“高考”的速成班，手里拿着致密的复习资料，桌上凌乱的堆着书本和卷子，形成一座富士山。也有摒弃一切杂念，专心学习，于外界断绝一切联系的，宛如未出闺阁的小姑娘一般，还要 ......
Dance 游记 After 2023 Last

Fence & FencedFrameConfig All In One

Fence & FencedFrameConfig All In One Fence // ƒ Fence() { [native code] } Fence() // VM241:1 Uncaught TypeError: Illegal constructor f = new Fence() / ......
FencedFrameConfig Fence All amp One

Data truncation: Invalid JSON text in argument 1 to function json_extract: "The document is empty." at position 0.问题解决

问题描述： json格式不规范导致的，仅使用where+json_valid清洗似乎并不足以解决问题 解决方法： select order_number,sku_code,CASE WHEN JSON_VALID(sales_price) THEN sales_price ELSE null END ......
quot json_extract truncation argument function

cypress 无法启动No version of Cypress is installed in: /Users/xxx/Library/Caches/Cypress/13.3.3/Cypress.app

使用npx cypress open 启动cypress 提示 No version of Cypress is installed in: /Users/xxx/Library/Caches/Cypress/13.3.3/Cypress.app npx cypress open No versio ......
Cypress installed cypress Library version

You can't specify target table 'Person' for update in FROM clause

问题原因 待更新的目标表不能直接出现在from子句中； 错误写法 DELETE FROM Person WHERE id NOT IN ( SELECT min( id ) FROM person t1 GROUP BY email ) 正确写法(多封装一层) DELETE FROM Person ......
39 specify Person clause target

kernel function: the difference beween cdev_add and device_create

To use a character driver, first you should register it with the system. Then you should expose it to the user space. 1. cdev_init and cdev_add functi ......
device_create difference function cdev_add kernel

[ERROR KubeletVersion]: the kubelet version is higher than the control plane version.

kubeadm、kubelet、kubectl 一起安装时，由于疏忽写成kubelet-1.27.3.0，结果版本变成kubelet-1.28了，导致报标题中的错误 安装指定版本 yum -y install kubeadm-1.27.3-0 kubelet-1.27.3-0 kubectl-1.2 ......
version KubeletVersion the kubelet control

How to tell whether a file is a symbolic link in shell script All In One

How to tell whether a file is a soft symbolic link in shell script All In One shell 脚本中如何判断一个文件是否是软链接 / 软符号链接 ......
symbolic whether script shell tell

A piece of code for loading and caching Skeleton Animation in IO task [Cocos2dx.3.17.2]

/**************************************************************************** Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd. http://www.cocos2 ......
Animation Skeleton Cocos2dx caching loading

Unity DOTS系列之Filter Baking Output与Prefab In Baking核心分析

最近DOTS发布了正式的版本, 我们来分享一下DOTS里面Baking核心机制，方便大家上手学习掌握Unity DOTS开发。今天给大家分享的Baking机制中的Filter Baking Output与Prefab In Baking。 Filter Baking Output 机制 在默认情况下 ......
Baking 核心 Filter Output Prefab

eslint提示 xxx should be listed in the project's dependencies

有时候手动安装了一个npm包A，npm包A里面包含了npm包B，这时候如果 import xxx from 'npm包B'; eslint会报错，提示 npm包B 不在 package.json 里面 解决方法：在 eslintrc.js 增加配置 module.exports = { rules: ......
dependencies project eslint should listed

Disconnected from the target VM, address: '127.0.0.1:56577', transport: 'socket' 端口占用

Disconnected from the target VM, address: '127.0.0.1:56577', transport: 'socket' 端口占用 Disconnected from the target VM, address: '127.0.0.1:56577', tra ......
39 Disconnected 端口 transport address

CF1132C Painting the Fence 题解

@目录DescriptionSolutionCode Description 有一面长为 \(n\) 的墙以及 \(q\) 个工人，第 \(i\) 个工人粉刷 \(l_i\) 到 \(r_i\) 的墙面，现在要去掉两个工人，问剩余 \(q-2\) 个工人最多能粉刷多少墙面。 Solution 注意数 ......
题解 Painting 1132C Fence 1132

CF1467E Distinctive Roots in a Tree

突然发现深究一些树上问题还是挺有意思的哈。 显然对于同一种权值的任意两个结点，其两端的部分都是不合法的。 维护两个标记表示子树内均不合法与子树外均不合法即可。但相同权值的点对数量是 \(O(n^2)\) 的，我们要优化这个过程。 发现很多点对都是无用的。DFS 下去，遇到一个 \(x\) 权值的结点 ......
Distinctive 1467E Roots 1467 Tree

Linux shell script function All In One

Linux shell script function All In One shell 脚本函数 ......
function script Linux shell All

pgsql create table,cpp fill psql table via the third party library pqxx

//create table t1; create table t1(id bigserial not null primary key,author varchar(40) not null,comment varchar(40) not null,content varchar(40) not ......
table library create pgsql party

c: thread in windows

/*****************************************************************//** * \file helloworld.C * \brief 业务操作方法 * VSCODE c11 安装插件“Doxygen Documentation Ge ......
windows thread in

2023 互联网 1024 程序员节 All In One

2023 互联网 1024 程序员节 All In One 1024 程序员节 1024 Programmer’s Day ......
程序员 互联网 程序 2023 1024

CF809D Hitchhiking in the Baltic States-平衡树+DP

CF809D Hitchhiking in the Baltic States-平衡树+DP Statement 给出 \(n\) 个区间 \([l_i,r_i]\) 和 \(n\) 个未知数 \(a_1,a_2,\dots,a_n\)，现在你要确定这 \(n\) 个数，使得 \(a_i\in[l_ ......
Hitchhiking Baltic States 809D 809

Unity DOTS系列之Filter Baking Output与Prefab In Baking核心分析

最近DOTS发布了正式的版本, 我们来分享一下DOTS里面Baking核心机制，方便大家上手学习掌握Unity DOTS开发。今天给大家分享的Baking机制中的Filter Baking Output与Prefab In Baking。 对啦！这里有个游戏开发交流小组里面聚集了一帮热爱学习游戏的零 ......
Baking 核心 Filter Output Prefab

The ConnectionString property has not been initialized.

原因： 情况1 DbContext中没有指定连接字符串 解决： 情况2 appsettings.json 配置文件的属性没有设置为始终复制 ......
ConnectionString initialized property been The

c: thread in Ubuntu 22.04

/** * @file helloworld.c * @author your name (geovindu@163.com) * @brief thread * @version 0.1 * @date 2023-10-24 * ide: vscode c11,c17 Ubuntu 22.04 * ......
thread Ubuntu 22.04 in 22

2023-10-24 Too many re-renders. React limits the number of renders to prevent an infinite loop. ==》组件在渲染过程中执行了任务导致状态更新，从而触发了无限循环

React报错： Too many re-renders. React limits the number of renders to prevent an infinite loop. 重新渲染过多。React限制渲染次数，以防止出现无限循环。 解决方案：查看你最近写的代码，比如我写了一个函数组件 ......
renders re-renders 组件 infinite 状态

[VM] The JavaScript Virtual Machine

Table of Content Introudction to VMs CPU - Understanding the Pysical Machine VMs - Arrays, Objects, functions, prototype chains DepotExplorer: collect ......
JavaScript Machine Virtual The VM

Maven打包报错问题的解决-- No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format

问题描述 在使用maven执行打包操作时，出现了这样的错误： 上面的图片是网上的图，我的图片忘记截图了； 问题解决 在我们创建的项目里面的pom.xml文件里面的dependencies标签后面，新建一个build标签， 并在build标签里面放上这句代码： <defaultGoal>compile ......
specified lifecycle specify format 问题

[925] GDA2020_MGA and change the spatial reference in ArcGIS Pro

ZONE50: 114.0 120.0 - arcpy.mp.spatialReference("GDA2020_MGA_Zone_50") ZONE51: 120.0 126.0 - arcpy.mp.spatialReference("GDA2020_MGA_Zone_51") ZONE52: ......
reference spatial ArcGIS change 2020

Kth Largest Element in a Stream

study/java Design a class to find the kth largest element in a stream. Note that it is the kth largest element in the sorted order, not the kth distin ......
Element Largest Stream Kth in

How To Clear Quick Access And Recent File And Folders In Windows 10

How To Clear Quick Access And Recent File And Folders In Windows 10 Here are the instructions to clear the Quick Access and Recent Files and Folders c ......
And Folders Windows Access Recent

How to fix EventSource onmessage not working in JavaScript All in One

How to fix EventSource onmessage not working in JavaScript All in One SSE Server-Sent Events / 服务端推送 Node.js Buffer.from ......
EventSource JavaScript onmessage working in
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