solution p9194 the of

[Javascript] Improve performance of Array.reduce

Compare two code snippet const people = [ {id: 1,name: 'John', age: 45}, {id: 2,name: "Op", age: 32}, {id: 3, name: "Wade",age: 39 } ] // option 1 con ......
performance Javascript Improve reduce Array

The Forset NC14325

link 代码 #include<bits/stdc++.h> using namespace std; const int N = 1010; //如果坏人可以到达终点,并且距离终点的距离小于等于 起点到终点的距离,那么必然会相遇 //所以我们从终点出发找起点,在找到起点之前如果到达坏人所在地方, ......
Forset 14325 The NC

Code: 43, e.displayText() = DB::Exception: Invalid types of arguments 2 and 3 of if (version 20.8.3.18 (official build))错误

Mysql当ifnull()和sum()联合使用时不会出现问题,如以下sql查询语句: select ifnull(sum(`sales_total`),0) sales_total, ifnull(sum(`order_count`),0) order_count, ifnull(sum(`avg ......

现代计算机图形学——P1-2. Review of Linear Algebra

(自用笔记) P1. (虚假的P1)计算机图形学、其研究内容及其相关领域与学科 P1. (真正的P1)Overview of Computer Graphics P2. Review of Linear Algebra P1 计算机图形学——是研究怎样用计算机输入、生成(处理)、存储、显示、输出图形 ......
图形 Algebra 计算机 Linear Review

multiple definition of `MainWindow::MainWindow(QWidget*)

qt刚建好工程运行的时候没问题,后面写了一点东西之后,再运行就发现出现MainWindow重复,我不理解。 解决方法:删除重复的引用。 再重新构建一下就好了。 ......
MainWindow definition multiple QWidget of

Server Error `defineOptions()` in <script setup> cannot reference locally declared variables (COMPONENT_NAME) because it will be hoisted outside of the setup() function.

这个错误提示是因为在<script setup>标签中使用了defineOptions()函数,并且该函数中引用了一个本地声明的变量(比如COMPONENT_NAME)。由于<script setup>中的代码会被自动包装在setup()函数内部执行,而defineOptions()函数会被提升到s ......

Python调用TensorFlow时出现:FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated

百度了很多说是numpy版本过高,将numpy版本降低即可,我降低为1.16.2 但是会碰到pip uninstall numpy卸载不掉的问题 我一直忽视了是在conda创建的虚拟环境acc中运行的这个代码, 进入cmd pip uninstall时没注意是在base环境下,还是在自己创建的虚拟环 ......

container_of宏

在 C 语言中,container_of 是一个宏定义,可以通过指向结构体中的成员来获取该结构体的地址。它的定义如下: #define container_of(ptr, type, member) \ ((type *)((char *)(ptr) - offsetof(type, member) ......
container_of container of

20 An identity-based data aggregation protocol for the smart grid

![](https://img2023.cnblogs.com/blog/1954056/202304/1954056-20230407090242545-1069731187.jpg) ![](https://img2023.cnblogs.com/blog/1954056/202304/1954... ......

case of

函数参数的模式是case of表达式的一种语法替代。这两段代码做同样的事情,并且是可以互换的,如下 head' :: [a] -> a head' [] = error "empty list~" head' (x : _) = x head' :: [a] -> a head' xs = case ......
case of

迁移学习《Pseudo-Label : The Simple and Efficient Semi-Supervised Learning Method for Deep Neural Networks》

论文信息 论文标题:Pseudo-Label : The Simple and Efficient Semi-Supervised Learning Method for Deep Neural Networks论文作者:Dong-Hyun Lee论文来源:2013——ICML论文地址:downlo ......

Assignment to property of function parameter 'XXX' no-param-reassign 记录

在react项目中写了一个工具方法将两个数组数据进行整合,用了双重for循环,但是在提交代码时报了eslint的no-param-reassign 结果效果是有了,但是报lint错误,图片中已是解决后的代码,主要是因为防止我们这个参数造成属性覆盖,如图我使用的是Object.assign方法将我们的 ......

「Solution Set」 4.6 小记

P3964 [TJOI2013]松鼠聚会 首先小松鼠们对距离的概念是切比雪夫距离。 切比雪夫距离可以转化为曼哈顿距离。 切比雪夫距离原点为 $1$ 的点在数轴上是边长为 $2$ 的正方形上的 $8$ 个点。 然后这个正方形旋转一下再稍微放缩一下就可以变成这样: 我们发现正好对应曼哈顿距离为 $1$ ......
小记 Solution Set 4.6

解决ORA-04031:unable to allocate 56bytes of shared memory

登录PL/SQL Developer出现ORA-04031错误。 解决方式: 用oracle账号登录linux服务器 进入sqlplus sqlplus / as sysdba 查看sga大小 show parameter sga; 扩大sga空间 alter system set sga_max_ ......
allocate unable memory shared 04031

devicemapper: usage of loopback devices is strongly discouraged for production use. Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.

centos7下docker排坑之WARNING: devicemapper: usage of loopback devices is strongly discouraged docker 安装完成之后,docker info命令下的WARING 首先有两种规避手段,一种是调整devicemap ......

docker启动报错the backing xfs filesystem is formatted without d_type support

WARNING: overlay2: the backing xfs filesystem is formatted without d_type support, which leads to incorrect behavior. Reformat the filesystem with fty ......
filesystem formatted backing support without

XXX is not in the sudoers file. This incident will be reported

一:问题 XXX is not in the sudoers file. This incident will be reported 二:原因 当前用户不在sudoers文件中,导致报错 三:解决方案 ......
incident reported sudoers This file

建模copy时报错[lsFrozen Field is not found in the CDO xxxxChanges] 的解决方法

报错如图 日志报错如下 根据日志内容查找问题原因:由于 SetIsFrozen 逻辑导致异常。 解决办法:重写Maint的SaveAs方法,去掉SetIsFrozen 逻辑。 ......
xxxxChanges lsFrozen 时报 方法 Field

D - I Wanna Win The Game

https://atcoder.jp/contests/arc116/tasks/arc116_d #include<bits/stdc++.h> #define debug1(a) cout<<#a<<'='<< a << endl; #define debug2(a,b) cout<<#a<<" ......
Wanna Game The Win

D. Watch the Videos

https://codeforces.com/problemset/problem/1765/D 观察找规律 最大的和二分最小的,然后交替相邻,看是否合法 找到最长的合法段 答案就是总长度减去合法段加上原先的长度 #include<bits/stdc++.h> #define debug1(a) c ......
Videos Watch the

bootstrap5 .jqurey报错Cannot read properties of null (reading 'show')

// to enable tooltips with the default configuration $('[data-bs-toggle="tooltip"]').tooltip() // to initialize tooltips with given configuration $('[ ......

blockchain | 区块链安全靶场 The Ethernaut

blockchain | 区块链安全靶场 The Ethernaut 最近在学这一块,找个靶场玩玩:https://ethernaut.openzeppelin.com/ 可以参考:https://blog.csdn.net/rfrder/article/details/115572137 需要提前 ......
靶场 区块 blockchain Ethernaut The

transvalor forming solutions FORGE NxT 4.0 简体中文版(Multilingual edition)

FORGE NxT 4.0, due for release in October 2022, marks another step forward in the world of manufacturing process simulation. ......

The last packet sent successfully to the server was 0 milliseconds ago

问题:在做网站的时候,使用JDBC进行数据库连接的时候,死活连接不上,并出现了标题所示错误。 在服务器上用dbeaver来连接是没有问题的。 解决方法:检查阿里云安全组设置,发现没有把3306开放出去,开放后就可以了 ......
milliseconds successfully packet server last

The Many Ways To Call Axes In Matplotlib

%matplotlib widget from IPython.display import display, HTML import re from pathlib import Path import cv2 import numpy as np import matplotlib.pyplot ......
Matplotlib Many Call Axes Ways

被ST-Link【The content of ST-Link is corrupt】【Communication error with ST-Link】折磨是我的宿命

直接跳转【4】看解决方法,祝大家都顺利解决 【1】我的尝试 【2】我的错误情况 【3】我无用的努力 【尝试1:点击setting之后的第一个debug页面里面的port要改成sw,不然下载不成功】,其实这样只是比较节约端口而已,当然一般还是都选择【SW】 【尝试2:output里记得把 create ......
ST-Link Link Communication 宿命 ST

[LeetCode] 1339. Maximum Product of Splitted Binary Tree 分裂二叉树的最大乘积

Given the root of a binary tree, split the binary tree into two subtrees by removing one edge such that the product of the sums of the subtrees is max ......
乘积 LeetCode Splitted Maximum Product

How to Configure Nginx reverse proxy the domain

未测试过,自己记录待用 http { resolver 8.8.8.8; upstream example { server http://example.com resolve [use_last] ...; keepalive 1024; } 第二种负载均衡 upstream mytarget{ ......
Configure reverse domain Nginx proxy

[LeetCode] 2405. Optimal Partition of String

Given a string s, partition the string into one or more substrings such that the characters in each substring are unique. That is, no letter appears i ......
Partition LeetCode Optimal String 2405

cpp: Sorting a List of Objects with Custom Comparator or Lambda Function

PigInfo.h #ifndef PIGINFO_H #define PIGINFO_H #include <iostream> #include<string.h> #include<math.h> using namespace std; /* 实体类 https://learn.micros ......
Comparator Function Sorting Objects Custom