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Recent questions in Technique[技术]
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scala - getting akka dead letters when using pipeTo between two actors
i have a use case in which i have a actor hierarchy parent -> childABC -> workerchild Now the worker child works and send its ... like this? if so what should i do to make it work...
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javascript - Replace <li> element with replace count index in Freemarker
I need something to replace <li> with count index like 1,2,3 etc in Freemarker. Here is the sample code: <li>some text in ... li> with single value. ${content?replace('<li>','-')}...
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在一个canvas上再绘制叠加一个canvas,报错,如下图和代码
问题 我想把红块,放到人物框内 代码 <template> <div class='box'> <canvas id="canvas" class='canvas'></canvas> <canvas id="canvas2" class ... , img: img }) } }) }, } } </script> </style>...
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monitoring - support multiple kafka topics as inputs in telegraf
i have telegraf config which has inputs as below which is supporting 1 kafka topic as input is it possible/recommended ... , "topic2"] max_message_len = 100000 data_format = "json"...
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css - Align 3 unequal blocks left, center and right
I'm trying to align a top menu which consists of 3 blocks of content. What I'm trying to achieve is this: block 1: left ... /div> <div class="item">right</div> </div> </div>...
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python - Scraping data from a site first returns the data but when I run the code again it returns None object
I am new to web scraping, using beautiful soup and selenium. I am trying to scrape the following webpage ''' https://www. ... aok-hidden" id="expandTitleToggle"> </div> </div> '''...
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Ts 中这两种类型申明有什么区别,除了报错以外
...
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Python 3 : Two or more tuples as arguments
Is it possible to unpack two tuples as an argument of a function in Python 3? The code goes like this... def ... code to compare elements of tuple1 to elements of tuple2 Thanks!...
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Python
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函数声明与闭包的问题
下面是这个闭包面试题一直一知半解的,对于输出的结果我是这么理解的,每次循环的时候执行一遍立即执行函数,然后往匿名函数里传入一个形参i,每次立即执行函数调用的时候产生的匿名函数都不是同一个,所以console.log所引用的变量i也不 ... .log(i); }, 100 * i); })(i); } } //输出结果:0,1,2,3,4,5,6,7,8,9...
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Jan 27, 2021
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php - Build and customize an XML file with Symfony serializer
I'm working on the Symfony serializer and I'm trying to generate an XML from the results of a query made on my Mongo database. But ... <p>Text</p></div> </content> </entry> </feed>...
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Jan 27, 2021
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VSCode 误报语法错误
我在 mac osx 上用 vscode 写 c++,用的微软官方的 c++扩展,运行参数用的是g++ -std=c++2a XCode 自带clang,输入g++会自动连接使用clang,我另外下了个gcc/g++,在zshrc中写入alias gcc= ... 这是哪里设置出问题了,需要哪里再另外设置吗?现在的代码语法检测用的好像没有用到最新的std ...
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Jan 27, 2021
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Deleting fixed number of characters when specific word is encountered R
I have a data set thats of the format ID Content 1 2020-01-01 Car1 Technician1 Inspected parts 2 2020-01-01 ... wild card matching but have not been successful yet. Any thoughts?...
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Jan 25, 2021
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Deleting
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python - How to randomly uppercase characters in a string?
I want a way of grab an string variable and randomize which letters are uppercase, like so: upperRandomizer(" ... () method without success. Any help would be appreciated....
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Jan 25, 2021
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python
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vuecli中的js文件为什么可以使用node的api?
在vuecli的js文件,例如main.js中,可以使用Buffer process等node的api,也可以使用require语法 但自己写一个html中的script脚本是无法使用这些api的,请问是什么原因,是使用了哪些包或者服务 ... 能点破一下 vuecli启动的环境中打印process是有值的 单纯的html文件中的脚本无法访问process...
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Jan 25, 2021
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Fail2ban无法启用sshd jail
已新增配置jail.local: [DEFAULT] maxretry = 5 findtime = 60 [sshd] enbale = true port = 19369 backend = auto 重启指令:sudo service ... but the jail 'sshd' does not exist 请问该如何启用sshd jail?...
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Jan 25, 2021
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Fail2ban无法启用sshd
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Java多模块项目,分离打包后统一异常处理失效
问题描述: 项目是基于SpringBoot的多模块项目,main方法在manage模块中,使用maven-assembly-plugin完成打包,打包之后将配置文件和项目中用到的jar包分离,通过java -Xms512m -Xmx1g -cp conf:lib/* ... ,打包为一个单独的jar包也是生效的,但分离打包之后就失效了,还请各位大佬帮帮忙!...
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Jan 25, 2021
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go有没有推荐的rabbitmq的封装好的第三方包推荐
go有没有推荐的rabbitmq的封装好的第三方包推荐...
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Jan 25, 2021
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embedded - STM32 boot loader
I'm learning about embedded systems and have an idea about one small project and I want to use Cortex M0+ based ... code from my laptop to microcontroller? Thanks for the replies....
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Jan 25, 2021
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embedded
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antd 的table组件多维数组解析问题
data: [ [ { number: ' 1', money: '1' }, { number: '2', money: '2' }, {} ], [ { number: '1', money: '3' }, { number: '2 ... : 'center', render:()=>{} } ] 多维数组 render如何解析呢 主要是想实现行合并...
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Jan 24, 2021
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antd
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ios - How to use IndexSet to find item in a custom Struct
I'm trying to use SwiftUI's .delete method on a list to identify what HKWorkout the user is trying to ... UUID() var yearMonth: YearMonth var trackerWorkouts: [TrackerWorkout] }...
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Jan 24, 2021
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ios
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python - I want this cube in pygame to move when I update it
My cube in which I am updating to move 5 pixels every frame, will not move. I have checked my code and I ... = 32 TILEWIDTH = WIDTH / TILESIZE TILEHEIGHT = HEIGHT / TILESIZE...
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Jan 24, 2021
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python
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python - Converting for loop generated tabular data into Data frame
I have data (example A, B, C,D) imported from different excel files and I want to form a Data Frame by ... ) data1 data2 data3 data4 data5 data6 Kindly, I am requesting help...
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Jan 24, 2021
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python
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__cplusplus使用问题
某客时间大佬专栏,大佬写的代码 #ifdef __cplusplus // 定义了这个宏就是在用C++编译 extern "C" { // 函数按照C的方式去处理 #endif void a_c_function(int a); #ifdef __cplusplus ... 也报同样的错误,是我哪里没搞对,还是本来就不能这么用??预处理这里能这么用吗?...
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Jan 24, 2021
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iview如何实现图片上传
iview如何实现图片上传 带回显的功能 有没有一个可用的demo...
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Jan 24, 2021
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Set GitHub Action Output Variable Inside Index List Expression
I execute a main-action with an entrypoint.sh bash script that returns an environment variable named MATRIX_LIST that looks ... ` echo "MATRIX_LIST=${MATRIX_LIST}" >> $GITHUB_ENV }...
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Set
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Springboot 项目cpu占用高
代码中只是用了到一个定时器,运行一段时间就会出现这样...
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Jan 24, 2021
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在Vue2的项目升级Vue3时,Vue.set(person, 'name', 'xxx') 需要用什么替代
在Vue2的项目升级Vue3时,Vue.set(person, 'name', 'xxx') 需要用什么替代 官网中这句话怎么理解:These global APIs in Vue 2.x are affected by this change: Vue.set (only in compat builds)...
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在Vue2的项目升级Vue3时,Vue.set(person
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c++ - docker cannot find libraries that are there
I am facing a strange issue. I have a dockerfile for a executable I have created. Obviously it runs perfectly ... => /lib/x86_64-linux-gnu/libcrypt.so.1 (0x00007fe455186000)...
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