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参考element的穿梭框，我设置了这样两个数组 let aaa = [ {key:'0001',label:'图片1'}, {key:'0002',label:'图片2'}, {key:'0003',label:'图片3'}, {key: ... label}) => { if(item===key){ return {} } }) }) 请教各位如何实现...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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chorme sources断点调试取消断点后一直加载中？

RT，取消断点后就一直加载...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vim - vimrc reference python3 path through system command

For the YouCompleteMe plugin, I would like to set the parameter g:ycm_path_to_python_interpreter in my vimrc to the path of ... /ubuntu/anaconda3/bin/python3). How can I do that?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue.js - In NuxtJS How to configure different paths for publicPath, outputDir, and indexPath

I have situation when i deploy NuxtJS App for production that I need put files in different paths. I used this configurations ... : path.resolve('../my_app/www/my_page.html'), },...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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关于c++里new和delete[]的问题

我花了两个多小时才调试它并检查代码错误但是我仍然找不到它崩溃的原因如果删除第91行到第93行之间的代码，则源代码将能够在vs和vscode中运行，但在dev-c中失败 dev-c的反馈是程序接收到的信 ... i++) { cout << raCopy[i + firstI] << " "; } system("pause"); return 0; }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android studio projects cant run in other disks

i installed android studio on C, but if i try to run a project in other disk with a file system other than NTFS, it ... i create in D, i get this error when run in simulator....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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最近写了个项目，想打包成pyd没想到……

用命令python setup.py build_ext --inplace。本是个安详的打包过程没想到居然什么鬼，求各位大佬解决（以配饰powershell的环境变量）...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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In the R mice package, how do I find the number of nodes in the tree used in my imputation?

In a paper under review, I have a very large dataset with a relatively small number of imputations. The reviewer asked me ... =100,method="cart") impute2 <- complete(impute,"long")...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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element-ui中upload上传文件可以不经过后端，直接得到一个url供给前端接口获取吗

还有就是参数action是什么意思，是存放上传后文件的地址吗？这个action中的地址不可以随便写吗（我随便写了，访问不到任何东西）？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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server - How to check the deliverability of my outgoing email (spam, dkim, dmarc, spf)

The project I'm working on is a newsletter builder, and I'm on its final steps. Now I need to verify spf dkim and ... their domain but I don't think they gave me access to that....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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一次数据更新shouldComponentUpdate却执行两次？

父组件 import React from 'react' import Child from './Child' export default class Life extends React. ... 钮，有两次shouldComponentUpdate，componentWillUpdate和componentDidUpdate却只有一次是什么原因？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iPhone 11 Pro Max 无法长按识别二维码

长按的时候会触发 iphone11自带的图片预览功能，没法出现长按识别二维码功能。有没有什么办法可以规避掉这个问题...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - solcjs --bin test.sol exist RangeError: Maximum call stack size

i used **solcjs --bin test.sol ** At first it worked, but at last it made this mistake RangeError: Maximum call stack size enter image description here...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - A file in my resources folder isn't getting written with try-with-resources and BufferedWriter, why?

I have a file test.txt in the resources folder of my project, and I'm trying to write a List of strings to it, one for ... ().exists(), and it does return true . What am I missing?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue.js - Vue – access JSON data in method

I'm trying to write a simple function in the methods. It should create an array out of JSON data. The JSON object is ... works when using it "inline" in HTML. Thanks for any tips!...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to see crash report in Android Studio?

I think Android Studio is broken, I don't get any crash report. Yesterday I spent 1 hour to figure out that I forgot ... I need to see the crash report. I work on physical device....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vscode settings - VS Code - About method preview

I am using VS Code. When I hover over a method, it shows me the class over and over again with the method. I only want one of them to appear. Does this have a setting?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Vue3 data中的数据改变无效的问题和子组件向父组件emit发送消息无效的问题

背景：线上商城下订单的时候，用户选择存在localstroge中的地址父组件：选择地址的页面 selectAdd下的index.vue 子组件：每一个地址（CheckBox+地址）要实现只能选择一个地址确认 ... "handle" /> 然后methods接收： handle(){ console.log("1111"); }, 但是无法接收 ...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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如何求时间和

我有一个数组，这个数组的长度不定，格式如下： [ {'name':'hj1','optime':'2:27'}, {'name':'hj2','optime':'3:38'}, {'name':'hj3','optime':'0:41'}, {' ... 作耗时，格式为??小时:分钟现在我想对这个数组进行求和（该例子的总耗时是19:42），如何实现 ...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Prevent non-digits from being typed into the input in Blazor

In a Blazor application, I have an <input type="text" /> and I'm trying to do something so that non-digit characters cannot ... do that in Blazor, as far as I know, is that right?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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真是令人吐血的 nuxt vue-awesome-swiper

使用 vue-awesome-swiper 新版本能正确执行，但 ie 11 会报错使用 "vue-awesome-swiper": "2.6.7", 又是 windows is not define 正式醉了，哪位大神指导。nuxt 正确使用 vue-awesome-swiper 的方法，兼容ie11...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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react native - warn Package undefined has been ignored because it contains invalid configuration. Reason: Cannot find module 'undefined/package.json'

In my app.json folder, I have everything bundled nicely, but I have one undefined package at the bottom of the install list: ... in my app.json folder, and cannot get rid of it....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue 中能返回来一个 html的代码段吗

类似这样的，就是想返回来一个代码片段，如果不这样写，或者其他的方式写也行...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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156 views

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typescript范型中 T extends {} 是为了做怎样的限定？

比如这个范型T为什么要继承空对象，它是为了做怎样的限定，为什么这个T使用了非对象的number也不出错？继承空对象的目的何在？ interface F<T extends {}> { (name: T): T; } const func: F<number> = function (name: number): number { return name; }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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如何动态扩展服务器

请教一个有关DolphinDB database部署的问题：现在我只有1台服务器，将来可能扩展成多台服务器，问一下怎么配置才能支持将来的动态扩展，又不影响现有系统的运行？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Maven(exec plugin) does not parse the project path using the "/" character

I have a spring boot app configured with maven. Also, I'm using Intellij Idea 2020.2.3 as a text editor. I' ... Intellij Idea setting but I cannot figure out the problem. Any clue?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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443 views

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php workerman开启多进程，处理同一个任务时，如何处理任务重复的问题？

目前业务是使用workerman中timeer定时器每秒执行一次但业务总是中断不能连续执行只能连续执行一天左右不能长时间执行下去，后来分析日志发现是时间对应不上定时器每秒写入日志时？这个日志时间会中断几秒或几十秒执行应该是 ... 可是多进程执行同一个业务方法会并行添加多条重复业务数据如何处理这个重复业务数据的问题？求大神们指点一下...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Reusing EF entities for both EF 6.x and EF Core

I have a project on .NET 4.8 and EF 6.4.4. We are gradually migrating to .Net Core but during the process can ... Core data context class, EF Core and point both to same entities?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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