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1 answer

java - Filter Query results by JComboBox value

I'm learning how to use MySQL with Java. I have a database that has two tables. One for movies and the other one ... .addElement(s); } jList.setModel(list); } Thanks to everyone....

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

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757 views

1 answer

safari浏览器微信支付完成之后跳转回支付页，会触发什么事件？

网页支付问题苹果手机微信、支付宝支付完成之后回到支付页面，需要再次跳转到其他页面，在安卓系统中可以使用pageshow事件监听，苹果手机不生效，请问苹果手机哪些事件可以监听到？...

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

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634 views

1 answer

makefile - C: compiling with -D in make file

Hi i'm having issues while compiling my c program. I'm using Makefile to compile it. this is my make file : # flags ... h" // error I'm familiar with makefile , anynone can help?...

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

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670 views

1 answer

请教高手们一个图片加载的问题

请问高手们，在微信小程序中，我们的首页是一张160k的背景图，我想用户一进页面，这张背景图立刻就加载完毕，呈现出来，用户不会看到图片慢慢加载出来，请问能实现吗，看到app进入首页，图片是可以立马加载出来，谢谢了？...

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

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445 views

1 answer

Neden Haxm yuklenmiyor?

Amdroid Studio yuklenmedi nedeni HAXM butanuna basilmadi API 30 butonuna basdim ama diger butonuna basilamiyor Performace ( ... )-(installed) diyiyor ama basilamiyor buton neden?...

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

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805 views

1 answer

reactjs - Testing React component has updated context

What would be the correct way to test that a component has updated its parent context? Say from the example below, after ... => fireEvent.click(button)) expect(state).toBe(2) })...

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

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930 views

1 answer

win10系统改成UTF8编码后powershell变成了英文

win10系统改成UTF8编码后 powershell 提示变成了英文，原来是GBK的时候是中文 cmd也是这样有知道怎么在UTF8的情况下把powershell改为中文？？？求 ... on NTFS partitions. CONVERT Converts FAT volumes to NTFS. You cannot convert the...

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

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970 views

1 answer

el-calendar如何切换渲染指定月份？

为了实现类似这样，点击上边日期选择后切换到对应的月份，求教...

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

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1.6k views

1 answer

请问移动端开发滚动条在底部导航上边如何让滚动条去下边

我不想让这个滚动条在底部菜单上边太难看如何解决这个问题请教...

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

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1.6k views

1 answer

js 数据遍历问题

const arr = [ { id: 1, name: "张三", children: [ { id: 1.1, name: "张四", children: [{ id: 1.11, name: "张五" }] } ] } ]; 已知张五id，怎么拿到张四id 已知张四id,怎么拿到张三id...

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

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1.7k views

1 answer

Fabric 不同合约数据隔离。互相查不到对方上链的数据咋回事

Fabric 1.4 用couchDB 作为状态库 A 合约上链，B合约查询A合约上链的数据查不到的问题。折腾半天登录couchDB后台看到，不同合约建立了不同的Databases，直接导致在不同合约下操作的数据压根就不是同一个空间。有什么办法能让两个或多个合约操作的数据是同一个Databases？是不是需要弄什么配置？...

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

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2.4k views

1 answer

如何让多个对象相同的属性值相加

var data = [ { typeId: '2', name: 'potato', number: 16 }, { typeId: '3', name: 'potato', number: 10 }, { typeId: '4', name: ' ... number 合并，得到一个新的对象,从而返回一个新数组 arr，有哪些比较好的方法？...

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

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3.0k views

1 answer

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> '''...

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

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3.8k views

1 answer

reactjs - React Jest Testing : Mock this Custom React hook

I am using this to store state in a React app(hooks based) instead of redux. import React, { createContext, ... :5) at callCallback (node_modules/react-dom/cjs/react-dom.developmen...

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

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3.3k views

1 answer

vue项目中添加echarts-gl 报错请教怎么解决？

...

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

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3.1k views

1 answer

html - Bootstrap Adding Margin to Centered Column

I have 2 columns that have height 100%. The text is centered in the middle of these columns with margin-left 0. <div class='container- ... here </p> </div> </div> </div> </div>...

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

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4.0k views

1 answer

linux - Using xargs to run multiple commands

Using this post as a starting point I am running the following in bash: seq 1 5 | xargs -d $' ' sh -c ' ... intended arguments. Am probably being a tool, but wondering why this is....

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

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7.0k views

2 answers

linux - BitBucket Configuration for cross platform usage

I need to configure Bitbucket on an azure linux vm (Ubuntu server) as i want to manage all repositories containing my . ... able to figure it out. Thanks in advance for your help!...

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

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3.6k views

1 answer

谁有现成的前端搭建好的项目？

该项目包含env.development，开发模式，生产模式切换。如果更完善，包含axios，单元测试等就更好了。求助大佬~谢谢！...

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

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4.0k views

1 answer

model view controller - Singleton pattern in my php project returns an empty object in second time

i have two classes in my project. Db.php : <?php namespace appcore; use PDO; class Db { private $dsn = 'mysql:host= ... problem and how can i solve this? What am i doing wrong?...

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

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3.6k views

1 answer

react 打包上线 { children } 里面组件没有渲染？

打包环境没有展示出来dom结构本地开发正常代码写法如果换成下面 <home/> <rules/>就可以展示控制台打印的props都有的...

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

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4.4k views

1 answer

selenium - What is the element name of Google search button?

I am now using Selenium & Ruby to take a screenshot automatically, however, I cannot find the element ... submitElement.click driver.save_screenshot('tabetai.png') driver.quit...

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

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3.9k views

1 answer

vue.js - textarea does not accept the correct size after display none

Textarea style overflow:hidden; outline: none; border: none; width: 100%; resize: inherit; Through foreach, notes are obtained( ... true; this.visibleNumber = num; } }, }, })...

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

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4.0k views

1 answer

关于 nginx 静态文件配置问题

场景是这样，服务器上搭建一个静态文件目录 nginx 配置如下： server { listen 80; location ^~ / { index index.html index.shtml; root /usr/share/nginx/html; ... 是不会去加 /的，可以不加 / 也访问到对应的 .../index.html 资源吗？...

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

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4.0k views

1 answer

python - Efficient conditional selection with masks in very large dataframe

I have a dataframe with some 2 million rows like this: dt num 0 2019-05-12 10:17:00 135 1 2018-01-16 21:32 ... provided (groupby) solves it in seconds against close to one hour......

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

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3.9k views

1 answer

swift - How to zip two publishers if the second one depends on the values received by the first one?

The data that I need to create a model are split and only receivable via two API requests. The ... = personalLikeCount return newModel } .eraseToAnyPublisher() return publisher }...

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

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3.9k views

1 answer

windows - Change the version of Python that runs by default

I have two versions of python installed in my pc: and: when I type in cmd 'python', the version executed is 3. ... delete the 32-bit version, as I do not have administrator access....

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

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3.3k views

1 answer

typescript - Cannot be dynamically inferred after passing some generic parameters

const a = < T extends any = any, B extends boolean = true, R extends T | undefined = B extends ... parameters or dynamically inferred and cannot be use simultaneously the two?...

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

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