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请问如何下载图片 https://cdn.ostack.cn/v-5f0a9217/global/img/user-64.png 并保存到本地 // 请问如何获取下载文件并保存 fs.writeFileSync('1.png ... }) 但是这样并不能下载图片， https://github.com/sindresorhus/got/issues/899...

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

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540 views

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请问如何优雅的判断数组存在和数组长度

比如说后端接口返回了一个数组类型数据前端要判断 (json.array && json.array.length) {} 更极端点可能要判断下类型想知道有没有什么办法可以比较优雅的解决. 使用的技术栈有Vue TS Lodash...

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

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582 views

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webpack处理图片配置url-loader时后面的.ext有什么用？

webpack.config.js module:{ rules:[ { test:/.(jpg|gif|png|jpeg)/, loader:'url-loader?name=image/[hash:10].[ext]' } ] } 求解加上.[ext]的作用是什么...

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

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298 views

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r - how to count the total without NA

I want to do a summary count by group. And I don't want the final results include the calculation of 'NA'. I ... one for UNKNOWn. It means differently compared to the case with NA....

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

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345 views

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regex - How do I combine that

I have these texts: 1000 2000 3000 4000 5000 6000 Now I want them to be like that but each one in a single line ... one line, like in the picture: 1000:2000 3000:4000 5000:6000...

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

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271 views

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How to determine memory consumption of Sqlite in Java/Scala?

We use file based Sqlite via jdbc in our Scala app. I suspect we consume to much process memory using it as our Process ... not sure if I can use that in our JDBC based approach....

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

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772 views

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vue-cli 打包组件上传到npm排除不必要的库？

网上的一些教程都过时了，不过我还是找到了一份： https://www.cnblogs.com/wisew... 按照操作提交成功了，可是打出的包很大，而且依赖了一些不需要的库，比如axios，如下图：这个axios是测试页面用到的，组件应该是不需要的，请问，如何正确的发布？项目源码：https://gitee.com/ZeronoFreya......

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

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288 views

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reactjs - Creating a prismic slice with next js

I am trying to add a slice to use on prismic CMS with next.js but am having trouble. I cant find many tutorials on ... state the steps to make a really simple 'hello world' slice?...

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

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218 views

1 answer

windows - Create dictionary / list from registered variable in Ansible

Hej *, I'm writing a playbook which should set some disk attributes in the Windows registry. All disk attributes are ... Is there a way to accomplish that? Thanks and regards Erik...

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

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1.0k views

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thinkphp 中无法使用CASE更新数据吗？

如图：图片已删除顶部的语句在sql中直接执行时可以的，但是在tp中用query()执行更新就报错，为啥呢？...

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

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406 views

1 answer

Vue中只有一次DOM操作，有必要经过一层虚拟DOM吗？

假设有一个<a>标签含有一个title属性，如果只修改title属性，为什么不直接操作DOM，而还要经过一层虚拟DOM再更新，这样不会更费事吗？主要是想问：在只有一次DOM操作的时候，使用虚拟DOM和和直接修改真实DOM的区别？（注意，是只 ... 道两种情况下具体影响的是什么吗？以及上面那种场景只操作一次DOM的情况下，直接操作真实DOM性价比是否最优？...

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

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358 views

1 answer

请问如何优雅的将以下的数组重组为二维数组？

想要实现的是的数组效果是,将所有相同的fbill数据合并，最后将合并之后的fRight提取出来组成新的对象插入，组成一个新的二维数据，例如：旧数据： oldData: [ {fModuleID:1,fModule:'系统管理', ... {fRightID:2,fRight:'查询'}]} ], 目前我能想到的是三重循环，有没有比较优雅的方法呢？...

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

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206 views

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python - Convert Google Sheets export CSV response to dict

I have a use-case where I want to fetch a Google Sheet and turn it into a dict where the first row of the sheet is used ... is used as keys, it is not about how to fetch the data....

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

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353 views

1 answer

原生`WebSocket`断线不会自动重连吗？

请问原生WebSocket断线，或是第一次没连接上，不会自动重连吗？之前一直都是用socket.io，它是会自动重连的，今天因为一个组件要用原生WebSocket跟客户端通讯，发现如果客户端关掉，或者页面打开时客户端没开着，那WebSocket就一直是断线状态，就算客户端开起来也不能自动恢复连接，才有此疑问。...

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

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456 views

1 answer

window.open打开带中文的url出现乱码？

var href = "https://s.1688.com/selloffer/offer_search.htm?keywords=小白&sortType=va_rmdarkgmv30rt" var href2 = encodeURI(href) //编码了一次 ... (href2) 我使用encodeURI编码了一次，打开搜索结果还是有问题 ...

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

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373 views

1 answer

把事务隔离级别调到READ_UNCOMMITTED,读取不到未提交数据?

@Transactional(isolation=Isolation.READ_UNCOMMITTED) public void test(){ User u = new User(); u.setId("aaabbb") u.setName("111"); ... } READ_UNCOMMITTED应该是能获取到未提交的数据的,这是什么原因?...

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

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442 views

1 answer

如何用react-test-library测试一个input的checkbox类型的元素是否选中，大佬能给个例子吗？

如何用react-test-library测试一个input的checkbox类型的元素是否选中，大佬能给个例子吗？...

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

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260 views

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How to force my C# Winforms program run as administrator on any computer?

How to force my C# Winforms program run as administrator on any computer ? and any kind of OS ? I need code solution (any sample code will be excellent) Thanks in advance...

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

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511 views

1 answer

eslint+prettier.js一直报错

百度了很多方法都不知道怎么解决，一直报错我的prettier配置 eslinttr配置代码黄色波浪线有大神遇到过类似的问题吗求解...

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

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782 views

1 answer

compare and cropping theimage in python using OpenCV

I have two images below : Image1: Image2: I want to crop Image2 in the same manner as Image1. So if I read ... above script for below image then I am getting unexpected output :...

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

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177 views

1 answer

android - In-App Purchase Issue in Purchase Scenario - Kotlin

I am implementing In-App purchase demo in my android application to learn all the things carefully and deeply. Now, For ... I can buy it again! I am not implementing Subscriptions....

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

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931 views

1 answer

fullcalendar javascript cannot update Calendar after settings Options Weekends to True

im using FullCalendar, and i want switch between Showing to not showing weekends and vice versa. so it's OK when i ... calendar still not showing weekend. Thank you for your help....

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

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366 views

1 answer

一般你们是怎么防御自己的服务器的？

在节约成本的情况下？...

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

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297 views

1 answer

jquery如何遍历元素

<div class="term"> <b>面积</b> <div class="change0"> <a>10</a> <a>20</a> <a>30</a> <a>40</a> <a>50</a> </div> <b>体积</b> ... 类的内容，如果第二个a标签含有on类隐藏change1类的内容，如果第三个a标签含有on类隐藏change2类的内容...

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

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317 views

1 answer

mysql单表的数据量达到多少性能会下降？

mysql InnoDB单表的数据量达到多少性能会下降？...

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

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265 views

1 answer

javascript - how to get piramid output on screen

I try to make a number pyramid. the user can choose a number between 1-20. for example when the user says 8 the pyramid ... } document.write(output); output = ''; } } Pyramid();...

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

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210 views

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elasticsearch-php无法连接elasticsearch服务端

在cmd中用curl能够正常请求接口但是在elasticsearch-php中就连接不上，报集群错误！请问这是怎么回事？求大佬解答...

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

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140 views

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python - RLLib tunes PPOTrainer but not A2CTrainer

I am making a comparison between both kind of algorithms against the CartPole environment. Having the imports as: import ray ... I've coded something wrong. Is this a common issue?...

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

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