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Welcome to Our Knowledge Sharing Community-Open, Learning,Share

Welcome to developer's Knowledge Sharing Community-Open, Learning,Share 欢迎来到程序员专属的知识分享社区! 一个分享知识，传递知识，学习知识的社区！...

asked Feb 5, 2021 in Others[杂七杂八] by ostack (1.4k points)

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423 views

1 answer

memory - C++ : Alternative to constructor initializer lists without assignment?

I'm facing the following problem: I want to pass the _partHandlePtr to the constructor of _currUnmanaged and ... Handle>> _partHandlePtr; } Thanks for suggestions and solutions!...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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303 views

1 answer

excel - SQL Statement - Select Where * Not equal to

All, New to SQL Statements (Probably a really basic question) I am attempting to extract all data where the column ... The database I am using is Excel Database Thanks in advance...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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436 views

1 answer

有用过vite的吗

通过用了vite的插件让vite能跑vue2 但是发现好像当代码中有非esm规范的可能浏览器就解析不了了，查了一下，说optimization这个配置启动的话是能自动转的，将cjs转成esm规范，但是不知 ... path.replace(/^/api/, '') } }, port: 9876, } export default config 求助大佬...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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439 views

1 answer

apache 无法更改端口号

在win10下使用apache，设置好了httpd.conf的SRVROOT, 将servername设置成localhost或者是localhost:8888之类的，listen参数也跟着一起设置，但是无论如何，都只能在localhost上看到"it works"，加任何端口号都没办法访问，不知道是哪里出了问题...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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566 views

1 answer

screencast - Screen cast from Windows/Android to linux device connected indirectly

I was recently thinking about establishing a receiver of Wi-Di (aka Miracast) from my SBC with linux (Armbian at the ... in advance, I'll appreciate all relevant ideas or links....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

488 views

1 answer

return 数据无法到函数上

如上图，为什么箭头函数中return不到最终函数呢？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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640 views

1 answer

electron9.0.3版本无边窗弹窗出现的位置，总是不对。

原electron版本9.0.0，为了解决pdf预览问题升级到了9.0.3. 发现在linux上双屏的情况下无法全屏且程序界面总是出现在副屏幕，通过渲染进程设置{x:0,y:0}，成功将程序界面设置到了主屏幕但又出现了新问题，原 ... 渲染进程设置位置也无法移动子弹窗位置，但是把无边框变成有边框，{x:0,y:0}就生效了，求大佬解惑###...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

551 views

1 answer

python - Django import Error(from extras.plugins import PluginConfig)

I'm new to Django and I try to develope a plugin for NextBox using this framework. To get familliar with it ... installing the package, .plugins is unkown as well as PluginConfig...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

813 views

1 answer

model view controller - Forms inside foreach loop MVC

I have situation where MVC controller has sent list of records. Those records are displayed in view in order ... Details",new { transferHeaderId = update.TransferHeaderId }); }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

641 views

1 answer

在DolphinDB GUI中执行脚本创建的本地变量，是不是占用server端的内存？

使用DolphinDB的过程中，我在windows端启动了GUI界面，执行了一个DolphinDB的脚本，创建了一些本地变量（不是数据库或共享表），这些本地变量是算GUI java进程的内存还是算DolphinDB server端进程的内存？getMemoryStat()这个函数返回的内存占用情况是DolphinDB server端进程的内存占用情况吗？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

799 views

1 answer

dva中effects的call使用

对call的使用，官网上说用于调用异步逻辑，支持promise 但是不使用call，也可以直接调用异步逻辑例如下面两种方式结果相同，所以还没搞明白call的使用场景， // 方式1 let res ... res.success) { yield put({ type: 'setData', payload: { data: res.data } }) }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

911 views

1 answer

performance testing - What is the ideal ratio between No of threads and ramp-up period in Jmeter for REST API

I need to design a very basic Performance test for REST API. no of concurrent users=40, response time= less than 500ms ... give ramp up period as 2 seconds? Thanks in Advance!!!...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

How to set up a dynamic R single choice quiz?

How to set up a dynamic R Quiz, with the choice of 5 elements, the first of which should be the correct solution, the others options must be incorrect?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

js 数组操作的问题

后端给我的数据是这样的： let obj = [ { areaName:"华南地区", cityName:"深圳" }, { areaName:"华南地区", cityName:"广州" }, { areaName:"华南地区", ... " }] }, { areaName:"华北地区", children:[ { cityName:"黑龙江" }] }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

在vue.config.js中怎么配置将一个第三方库编译成es5

const path = require('path'); function resolve(dir) { return path.join(__dirname, dir); } module.exports = { publicPath: '/wf/', ... : { compress: true, port: 9000, proxy: {} }, };...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.4k views

1 answer

Nginx : Location = / not working with location /

I have a nginx host file with two locations and I want to have the exact / goes to index.html and /something ... -For $proxy_add_x_forwarded_for; } I hope you can help me. Thanks....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.3k views

1 answer

Using ffmpeg on Ubuntu, how can the audio and video from an audio-video USB capture device be recorded?

I have a USB audio-video capture device, something used to digitize video cassettes. I want to record both the video ... -i /dev/video2 out.mp4 Unfortunately this hasn't worked....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.2k views

1 answer

mpvue中web-view怎么使用bindmessage？

如题，需求是h5页面传参给小程序接收，代码如下： h5： <template> <div> <button @click="postMessage">click</button> </div> </template> <script> import wx from ... 序点击进入web-view的page直接就跳转到h5页面了，也没有打印任何信息，求解 ...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.4k views

1 answer

react 函数组件可以实现继承类似的效果吗？

比如在插件的函数组件点击事件中：我希望如果组件指定那就调用统一指定的默认的点击事件，但是用户也可以自定义其行为，使用类比较好实现，但是现在基本都是函数组件，有什么方法可以做到？...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.6k views

1 answer

rust - How to get the interrupt reexport from cortex-m-rt in stm32f30x to run

I want to write a program for the STM32F3Discovery board using rust and the cortex-m-rt and stm32f30x crates. More precisely I want to ... = "0.6.3" I am gratefull for any help :)...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.6k views

1 answer

associative array - Sorting multi-dictionary in python

I have a datastructure like this: poll = { 'LINK' : {'MoonRaccoon' : 1, 'TheDirtyTree' : 1}, 'ZRX' : {' ... to python and super rusty at coding in general. Thanks for any help....

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.4k views

1 answer

再问一个js里面的一个新手小问题，关于声明变量

bbb="888" console.log(bbb) let bbb //为什么会输出bbb is not defined，let声明不是不会提升么,应该输出888呀 var a = 1; function foo(){ if(false){ var a = 2; ... 完毕 },0); }//如果多次执行，为什么前面会输出2,4,6 这是什么诶...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

2.0k views

1 answer

amazon web services - aws signatureThe request signature we calculated does not match the signature you provided

I am trying to invoke API gateway using AWS signature in nodejs. but I am getting "The request signature we calculated ... ), "isBase64Encoded": false }; return response } };...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.5k views

1 answer

使用think-queue,向指定DB插入数据问题

项目中使用了think-queue来处理一些延时任务。但是最近发现,比如redis默认的DB是0,当往DB0 PUSH数据的时候却写到了DB2或者其它DB。很是疑惑...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.5k views

1 answer

Node TS 框架使用的问题

想用 node + TS 部署一个后端项目，选来选去使用 nest 框架，但是打包的时候遇到了问题，nest build 命令不会把所有依赖打入最终文件，而是生成了一个 tsconfig.build.json 文件指定路径这样就导致 ... 录打入镜像后，发现还需要 npm install 才能使用而且一个初始项目就已经将近 400MB，实在是太大了 ...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.7k views

1 answer

Keyboard shortcuts not working on published extension, but working when loading unpacked developer extension?

I created keyboard shortcuts in my extension that worked while I was testing, but don't work when I ... docs/extensions/reference/commands/) these keyboard shortcuts should work....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.5k views

1 answer

vue.js - Login Firebase Ionic-Vue Capacitor

I am making an app that I want to compile for the web and for mobile in which I want to implement a login with ... a capacitor ionic-vue project that works on both web and mobile....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.6k views

1 answer

audio - Is there a way to imitate sound input with python?

I wanted to make a program that would pass some sound data to the system's microphone, imitating person's speech. ... with python (or any other language)? Thanks in advance....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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