multi-byte character the mapping
Go 语言为什么不支持并发读写 map?
大家好,我是 frank ,「 Golang 语言开发栈」公众号作者。 01 介绍 在 Go 语言项目开发中,我们经常会使用哈希表 map,它的时间复杂度是 O(1),Go 语言中的 map 使用开放寻址法避免哈希碰撞。 Go 语言中的 map 并非原子操作,不支持并发读写操作。 Go 官方认为 m ......
AtCoder World Tour 2022 B The Greatest Two
原题面:https://atcoder.jp/contests/wtf22-day2/tasks/wtf22_day2_b 题面翻译: 一个长度为 \(n\) 的排列 \(p\),每次可以把一个长 \(k\) 区间的最大与次大值交换,问操作任意次数后可以得到的排列数量对 \(998244353\) ......
python中的Map和Filter
map会将⼀个函数映射到⼀个输入列表的所有元素上。这是它的规范: 规范 map(function_to_apply, list_of_inputs) 大多数时候,我们要把列表中所有元素⼀个个地传递给⼀个函数,并收集输出。比方说: items = [1, 2, 3, 4, 5] squared = [ ......
Introducing the incident management
Forward Today, we talk about the significance of incident management. Firstly, we start it by some simple concepts. What exactly the incident is? Or w ......
A connection was successfully established with the server but then an error
在使用EFCore生成数据库的时候,报上面的错误! 解决方法: 加(Encrypt=True;TrustServerCertificate=True;)即可: "ConnectionStrings": { "DefaultConnection": "Data Source=LAPTOP;Initia ......
An improved LSTM-based model for identifying high working intensity load segments of the tractor load spectrum
一区top Computers and Electronics in Agriculture 题目: “基于改进 lstm 的拖拉机载荷谱高工作强度载荷段识别模型” (pdf) “An improved LSTM-based model for identifying high working in ......
web项目启动时dubbo报错: No provider available for the service com.davidhu.shopguide.api.service.UserEventService from the url zookeeper ://localhost:2181/org.apache.du
Caused by: java.lang.IllegalStateException: Failed to check the status of the service com.davidhu.shopguide.api.service.UserEventService. No provider ......
初中英语优秀范文100篇-056I have the courage to accept the challenge-我有勇气接受挑战
PDF格式公众号回复关键字:SHCZFW056 记忆树 1 Every year there is a singing competition in our school. 翻译 每一年,我们学校都会举行一场歌唱比赛。 简化记忆 比赛 句子结构 主语 ("Every year"):表示时间状语的短语 ......
Unity3d_Rewired官方文档翻译:要点(四):Rewired Editor->All Maps、Layout Rules、Map Enabler
仅翻译了官方文档中的Essentials(要点)、Concepts(概念)两部分,这是文档中最重要的部分,理解了这两部分的内容应该足以让你将Rewired运用到你的项目中,之后再去阅读文档的其他部分也能更容易理解。 斜体加下划线部分为添加的注解,非官方文档内容。若你发现有翻译、注解不正确的,请留言告 ......
org.springframework.kafka.listener.ListenerExecutionFailedException: Listener method could not be invoked with the incoming message
问题描述 kafka在yml文件中未开启批量消费时,程序正常运行;但一开启正常消费后,就直接报错;排查问题的过程中一直觉得是配置文件里的问题,最后发现是消费者接受的参数类型错误 问题本质 消费者开启批量消费数据后,不能用单个实体类接收参数,而应该用list 解决方法 修改消费者函数参数类型 ......
redis报错MISCONF Errors writing to the AOF file: No space left on device,磁盘满无法写入数据报错
查询报错远程调用接口异常,F12查看网络和标投和预览到是mgr的接口此错误#根据报错提示:Error in execution; nested excepti on is io.lettuce.core.RedisCommandExecutionException: MISCONF Errors w ......
hdu 6397 Character Encoding 容斥
我是链接 刷刷计数防止大脑萎缩 题意:给定n,m,k,要求我们选m个范围在[0,n−1]中的数,使得这m个数的和为k 其中n,m,k都是10^5以内 如果没有范围在[0,n−1]的限制,就是小球与盒子经典例题,答案就是C(k+m-1,m-1) 有这个限制的话,考虑容斥,我们强制1个数不合法(其他的数 ......
[linux kernel] struct pid && the way the kernel used to cast uint32_t pid to struct task_struct
摘抄内容引用自linux kernel document description pre the initialization and the manage of the struct pid is use IDR.(implement by hash table->(why not array?- ......
Redis - (error) WRONGTYPE Operation against a key holding the wrong kind of value
zzh@ZZHPC:~$ docker exec -it redis redis-cli 127.0.0.1:6379> SET bike:1 "Process 134" OK 127.0.0.1:6379> GET bike:1 "Process 134" 127.0.0.1:6379> HSET ......
The Acdamic Guideline
How to write your papers? Introduction Problem Methods Results Simulation How to start your research? Observation Problem Reserach Hypothesis Experime ......
解决前后端的跨域问题:Access to XMLHttpRequest at '**' from origin '**' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
报错信息: Access to XMLHttpRequest at 'http://localhost:8182/cooperationRequest/getList' from origin 'http://localhost:3004' has been blocked by CORS poli ......
Understanding the linux kernel Chapter2 Memory Addressing
Physical Memory Layout unavailable address for kernel either because they map hardware devices’ I/O shared memory or because the corresponding page fr ......
No 'Access-Control-Allow-Origin' header is present on the requested resource', 跨域访问的解决方法
https://blog.csdn.net/dear_little_bear/article/details/83999391 1. 当请求不在同一域名下的资源文件(ip地址+端口号)时,会报如下错误:“No ‘Access-Control-Allow-Origin’ header is prese ......
go中map使用
前端插件对输出数据有要求 mydata := map[string]interface{}{ "draw": draw, "recordsTotal": num, "recordsFiltered": num, "data": list, } c.JSON(http.StatusOK, mydata ......
Unlocking the Road to Success: The Benefits of Online Driver's Education
In the fast-paced world we live in, online education has become a staple for acquiring new skills and knowledge. This trend extends to driver's educat ......
The Evolution of Smart Car Technology: A Glimpse into the Future of Mobility
In the last decade, the automotive industry has witnessed a transformative shift towards smart car technology. Once a futuristic concept, smart cars a ......
vue报错:You may use special comments to disable some warnings. Use // eslint-disable-next-line to ignore the next line. Use /* eslint-disable */ to ignore all warnings in a file.
报错信息: 解决方法: ESLint 语法错误,那就取消ESLint验证规则 然后重启即可 ......
the ObjectARX system dynamic linker object
ObjectARX Reference Guide > Macros > AcRx Macros > acrxDynamicLinker Macro acrxDynamicLinkerC++ define acrxDynamicLinker \ AcRxDynamicLinker::cast(acr ......
MySQL Ignoring the redo log due to missing MLOG_CHECKPOINT between the checkpoint
错误信息: 2023-12-12T09:32:31.383149Z 0 [ERROR] InnoDB: Ignoring the redo log due to missing MLOG_CHECKPOINT between the checkpoint 5777611209 and the end ......
CF1523H Hopping Around the Array
首先考虑 \(k = 0\) 的情况。 贪心,最后一步之前每个 \(i\) 只会跳到 \(j \in [i, i + a_i]\) 且 \(j + a_j\) 最大的点 \(j\),这个信息或许可以线性处理?但是我没脑子,我用线段树维护,时间复杂度 \(\mathcal O(n \log n)\)。 ......
CF1886E I Wanna be the Team Leader 题解
Problem - E - Codeforces I Wanna be the Team Leader - 洛谷 差一点就想到了/ll 遇到困难?排序肯定不会变差! 性质:每个项目分配的程序员肯定是一段(显然) \(m\) 很小?考虑设 \(dp_{i,S}\) 表示考虑前 \(i\) 个人选项目集 ......
6 Fear of the Dark
题目是一定有答案的,说明所有的情况都是可行的,那么就会有两种情况 1 两个圆都包括了起点和终点 2 一个原包括了起点,另一个原包括了终点(圆一定是相交的) #include<bits/stdc++.h> using namespace std; double dx(int x1,int y1,int ......
CF1886D Monocarp and the Set 题解
Monocarp and the Set - 洛谷 Problem - D - Codeforces 非常之降智 加入一个数让他满足他是最大值需要判断前面加入的那些数中最大的是哪个,但删除一个数让他满足是最大值只需要直接把他删掉即可 因此我们要反着考虑这个问题: 如果当前是 <,则删除最小的数,有一 ......
使用orbslam位姿进行map2dfusion的建图
https://blog.csdn.net/qq_60320488/article/details/132084670 一、map2dfusion所采用的数据集如下 npupilab/npu-dronemap-dataset: NPU Drone-Map Dataset (github.com) 其 ......