solution p9194 the of

EF出现错误:An error occurred while updating the entries. See the inner exception for details.

问题:EF出现错误An error occurred while updating the entries. See the inner exception for details 场景:适用Excel批量导入数据时,提示了以上错误 解决思路: 1、查看是否有重复的主键 2、是否有不可为空的字段没有 ......
exception the occurred updating 错误

PAT_A1104 Sum of Number Segments

Given a sequence of positive numbers, a segment is defined to be a consecutive subsequence. For example, given the sequence { 0.1, 0.2, 0.3, 0.4 }, we ......
Segments Number PAT_A 1104 PAT

Paper Reading: WCDForest: a weighted cascade deep forest model toward the classifcation tasks

针对 gcForest 存在的一些缺点,本文提出了一种 WCDForest 模型来提高小样本分类数据集的准确率。为了提高 WCDForest 的特征提取能力,提出了一种等量多粒度扫描模块,可以平等地扫描边缘特征。提出了类向量加权模块和特征增强模块,它们重新评估了 RF 在多粒度扫描和级联森林阶段的分... ......
160 classifcation WCDForest weighted Reading

PAT 甲级【1012 The Best Rank】

本题用java极容易超时,提交了好几次才成功 另外90 88 77 77 50,名次应该是1 2 3 3 5 ,不是1 2 3 3 4 import java.io.*; public class Main { @SuppressWarnings("unchecked") public static ......
甲级 1012 Best Rank PAT

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

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 ......

house of orange(无free的一种利用方法)

house of orange(没有free情况下获得一个unsortedbin) 之前就已经了解了house of orange但是没有写博客记录,这几天正好把buu上前几页当时没写的写了一下,其中就有著名的house of orange 实现效果: house of orange可以实现程序无f ......
方法 orange house free of

Practice Assessment for Exam AZ-400: Designing and Implementing Microsoft DevOps Solution

https://learn.microsoft.com/en-us/credentials/certifications/exams/az-400/practice/assessment?assessment-type=practice&assessmentId=56 The most secure ......

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

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 ......

[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

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

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

给react native 添加transform translateY动画报错:Transform with key of "translateY" must be a number:{translateY“:0}

初学react native,想实现一个相机扫描功能时,报错,报错描述如标题 这是我的主要逻辑代码 const fadeAnim = useRef(new Animated.Value(0)).current; const move = () => { fadeAnim.setValue(0); A ......
translateY 画报 quot Transform transform

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

Solution Set 2

集合之和 Attachments - 2022 CCPC Henan Provincial Collegiate Programming Contest - Codeforces 题意 构造一个集合,使得集合中每两个数相加,得到的数再组成的一个集合,使得新集合的大小为\(n\)。 思路 当\(n\) ......
Solution Set

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

pinia: Cannot read properties of undefined (reading '_s')

使用 Vue3 + Pinia + PNPM + Vite 开发一个前端项目时,运行preview,报错: pinia Cannot read properties of undefined (reading '_s') 报错的代码是压缩后的: function we(e, t, n) { let ......
properties undefined reading Cannot pinia

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

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 ......

GPT-GNN: Generative Pre-Training of Graph Neural Networks

目录概符号说明GPT-GNN代码 Hu Z., Dong Y., Wang K., Chang K. and Sun Y. GPT-GNN: Generative pre-training of graph neural networks. KDD, 2020. 概 比较早的一篇图预训练模型. 符号 ......

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

解决Maven ‘parent.relativePath‘ of POM问题

随笔内容来自:https://zhuanlan.zhihu.com/p/453547775 会出现这个问题的意思是,子模块的 parent 写的不是父模块; 一般这种情况出现在子模块继承了 springboot,父模块是自己创建的 pom 工程; 解决方案: 在该<parent>标签中加上<rela ......
relativePath parent 问题 Maven POM

The 2nd Universal Cup. Stage 6: Warsaw L.Spectacle (思维)

大致题意: 给定n个玩家,每个玩家有一个战力值,安排 x (1 <= x <= n/2(向下取整))场游戏,每场游戏安排x对玩家对战,对于每一场游戏每个玩家只能参加一次对战,要求对于每x场玩家对战的两个玩家rating差的最大值尽可能小。 例如给定6个玩家战力值为10 13 14 20 100 10 ......
Spectacle Universal 思维 Warsaw Stage

PAT 甲级【1009 Product of Polynomials】

/* 系数为0不输出 貌似runtime异常也显示答案不正确*/import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.StreamToke ......
甲级 Polynomials Product 1009 PAT