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796 views

1 answer

e2e testing - Playwright test library - checkbox state

Please, how to get the status a checkbox element in the Playwright E2E test library....

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

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617 views

1 answer

TypeScript中enum枚举类型的实现原理？

ts中的代码： // 数字枚举 enum PostStatus { Draft = 0, baidu = 1, sougou = 2, } 上述编译为js代码： var PostStatus; (function (PostStatus) { PostStatus[ ... 1, sougou: 2} 对上述js代码的执行顺序不是很明白，求解答，十分感谢 ...

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

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733 views

1 answer

lambda - Lamdba expression Python to square even numbers and cube odd numbers

I am using Python 3.8 and I am attempting to write a lambda expression to square even numbers and cube odd numbers. ... However, the lambda expression is not doing the job. Help?...

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

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920 views

1 answer

Error while deploying node.js application to heroku (cannot find module dotenv, and npm ERR! errno 1)

I'm trying to upload my first node.js application to heroku. Build is showing successful, but the application cannot be opened ... = require('morgan'); const cors = require('cors')...

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

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1.1k views

1 answer

yii2 批量插入如何过滤数据库中已经有的数据

yii2 批量插入如何过滤数据库中已经有的数据 $sql = Yii::$app->db->getQueryBuilder()->batchInsert(ClueInfo::tableName(), ClueInfo::getFields(), $data); $res ... )->execute(); 如何在批量插入的同时自动跳过数据库中已存在数据...

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

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564 views

1 answer

python - How to change particular database columns value in in django framework

Hi i am try to solve reset password through dynamically .. what i doing some one register my form it will store ... this way please any one help me enter image description here...

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

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785 views

1 answer

How Can I Find a Button's Location Within a Spreadsheet With Google Apps Script?

I am creating a classroom attendance log in Google Sheets. I have a column with each student's name and a column for ... option if I could somehow force it to stay the same....

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

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1.2k views

1 answer

websocket 开启多个页面访问同一个连接会失效的问题?

需求：后端开启子进程跑脚本，利用websocket实时返回脚本执行输出。当我使用多个页面连接这个websocket时，第一个脚本跑完，连接断开，后面其他没跑完的链接也会同步断开，怎么解决？...

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

0 votes

1.2k views

1 answer

android - Flutter: keep image within the screen borders on scale and pan

I'm trying to implement zoom inout on image with both double tap and scale but I found out that whenever I scale on the ... alignment: FractionalOffset.center, ) ), ), ), ) ); }...

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

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1.8k views

1 answer

javascript - MongoDB BSON Document Size exception

I have created a chat Mongoose model for my chat API. I stored each chat json to messages field of the chat ... text message there is no binary mesage like video or photograph....

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

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1.5k views

1 answer

ruby on rails - React frontend deployment to heroku issues. 404 error

I am new to react and heroku. My backend is Ruby on Rails. I followed this guide: https://dev.to/caicindy87/ ... Solved I didn't include the static.json and it somehow works....

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

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1.7k views

1 answer

有没有什么可以优化文段排版的Python第三方库？

我用爬虫在网上抓了一些招标信息的网页，然后用Beautiful Soup库提取出主体文本写入word，但是相应的网页上的排版格式也就没了请问python有什么第三方库可以对这样的文本数据进行自动重拍格式吗？又或者我想从源网页上爬取到带排版的文本写入到word中，有什么其他方法吗？...

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

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2.6k views

1 answer

golang在有default的select语句中为何无法收到channel中传递的os.Signal?

golang版本：1.15.3 os: Mac OS 10.15.7 在一个goroutine中使用for循环不断地检测一个os.Signal的channel，如果收到os.Interrupt或者os.Kill信号，则退出程序如果 ... } }() for { fmt.Println("正在运行") time.Sleep(time.Second) } }...

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

0 votes

2.8k views

1 answer

TypeScript error trying to set a valid object property (key is treated as string despite conditional check)

The code below shows TS error: Element implicitly has an 'any' type because expression of type 'string' can't be used ... and I'd rather not create interfaces for each sub-object....

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

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2.2k views

1 answer

Highchart 的气泡图大小怎么设置

在highchart 官网看api 看到这四个属性minSize maxSize zMin zMax，具体作用没搞明白，感觉它们在互相影响，求大神解惑 plotOptions: { bubble: { minSize:0, maxSize: 100, zMin ... 50, 81, 10], [60, 60, 50], [50, 50, 100] ] }]...

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

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2.6k views

1 answer

接口数据传给this.chartData，但是在created和mounted都无法访问到它。

created 先执行341行没有数据，async await , $nextTick , 定时器都试过了，加载不出来我这些数据是传给echarts的接口： // 获取数据 findList( ... { console.log(this.chartData) }, mounted(){ console.log(this.chartData) },...

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

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2.4k views

1 answer

一个前端标签问题

https://gongshang.mingluji.com/beijing/name/朗乐迅洁（北京）科技有限责任公司 https://gongshang.mingluji.com/beijing/name/硕链科技有限公司感觉每个注册资金的标签都不一样啊，这种怎么提取"资金" 标签呢？...

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

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2.5k views

1 answer

chrome的BOM是否提供可设置下载路径的api呢？

如题，我想在前端实现一个导出功能，导出时可提供下载路径选择，不知“可选择下载路径”这一点该如何实现？感谢。...

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

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2.6k views

1 answer

cuda - Cusolver SVD does not give correct U and VT outputs for complex inputs

I am trying to find the SVD of a complex matrix in Cuda using CuSolver library. The singular values are correct and matching the ... } else if (0 > devInfo_h) { printf("%d-th par...

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

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2.8k views

1 answer

InfluxDB中的Fields不会被索引是什么意思？

Fields和Tags的都是表中的列，但是Tags会被索引，Fields不会。这里的索引是什么意思啊？...

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

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3.0k views

1 answer

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....

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

0 votes

2.5k views

1 answer

请问wed的视像头播放，挡住了自定义的弹窗，怎么解决

...

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

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3.0k views

1 answer

【docker】docker 中的应用怎么连接宿主机 MySQL ？

使用 docker for windows 安装了 metabase。 metabase 页面可以直接通过 localhost:3000 访问，但是连接数据库使用 localhost:3306 显示 access denied。...

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

0 votes

3.5k views

1 answer

css - Justify content inside Col in Bootstrap?

I'm trying to place 2 element one in the left and the other on the right inside Col and justify them horizontaly. I ... padding: 0.5rem; border-radius: 100px; background: white; }...

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

0 votes

2.8k views

1 answer

M1 macbook archey 输出的ip地址不正确，与ifconfig中的不同，如何解决？

M1 macbook archey 输出的ip地址不正确今天用mac连手机热点，然后用archey查看ip发现和之前没区别再用ifconfig命令查看发现两者给出的ip不一样，ifconfig为更改后的正确ip，archey似乎无论怎 ... 芯片的问题，还是哪里配置的出了错误 archey 使用brew安装 homebrew为arm架构版本如图...

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

0 votes

2.2k views

1 answer

为什么快速排列下面的代码跑不动呢，输入完就没有输出了？

为什么快速排列下面的代码跑不动呢，输入完就没有输出了 #include<stdio.h> #include<string.h> struct info { char name[100]; int score; }; struct info ... { printf("%s %dn",x[i].name,x[i].score); } return 0; }...

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

0 votes

3.2k views

1 answer

laravel - Error to Install xdebug on Mac OS with php 8

I just want to do phpunit --coveragefor my project first I got this error: PHPUnit 9.5.0 by Sebastian Bergmann and ... failed to mkdir /usr/local/Cellar/php/8.0.0_1/pecl/20200930...

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

0 votes

2.0k views

1 answer

百度小程序支持通过第三方的收银台调用微信和支付宝吗？

我们有自己的收银台，上面有银行、微信、支付宝，我想问下在百度小程序上调用我们自己的收银台，然后选择微信和支付宝，在跳转可以吗？...

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

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