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885 views

1 answer

一张图片宽高是571*799 想把这张图片画到白色背景上宽度550 高度自适应高度计算的也没错可是为什么画出来的这张图片比例不对呢 <image class="canvas3" style=" ... fail: function(res) { console.log(res); wx.hideLoading(); } }); }, 2000);...

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

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777 views

1 answer

图标的问题急急急

哪位了解这个...

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

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1.1k views

1 answer

Valgrind移植到arm开发板上缺少libc6-dbg的问题

为了定位程序运行中出现的内存问题，打算移植valgrind工具去分析原因在移植过程中出现了一些问题请教各位大神我的操作步骤如下： 1.从官网下载valgrind，放到ubuntu去编译；使用的是单板上的交叉工具 ... 过strip去掉了debug调试信息的relaese版的库； 4.那我该如何去移植debug版本的libc库呢？或者该如何去处理呢？...

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

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1.3k views

1 answer

C++ error : 'does not name a type error '

When runs this program ,compiler gives a error saying that "varA(in class C)does not name a type".what's the wrong with me? ... SetPrvA1(30); cout<<a1.show()<<endl; c1.show(); }...

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

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854 views

1 answer

关于Spring Security 中 User 的设计上的问题

近期在研究 Oauth2，由于 Security 有点遗忘，所以重新看了下，在阅读源码发现 Spring Security 中的hasAuthority()和hasRole()方法最终指向了同一个方法hasAnyAuthorityName() 这点在以前被忽略，Role表示 ... ，且网上关于这个内容的我并未能够找到，所以想请教下各位这些问题，感谢解惑 ...

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

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987 views

1 answer

containers - delete Kubernetes persistent volume from statefulset after scale down

I scaled my statefulset up to 4, and when scaling down to 1, I saw that I still have 4 persistent volumes ... -8c5f-dff2843b693f 7Gi RWO Delete Bound default/data-3 default 4h3m...

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

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1.3k views

1 answer

Apache Ignite 2.9.0 performance

We have setup a ignite cluster 2.9.0 with native persistence enabled in AKS. We wanted to evaluate apache ... gb Jmeter requests - 3 concurrent threads continuosly for 5 minutes...

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

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897 views

1 answer

逻辑习题: The Science of Programming, David Gries 第二章习题七答案有一句话看不懂

请问:原书解答中 This adds m propositions {E}i at the main level.到底啥意思?(见附件中划红线那句) 这使得主层增加了m个{E}i.(按我理解,应该是一次操作增加了k个啊.) 这使得主层由m个g组成的{E}i的个数增加了.(难道是这个意思?)...

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

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1.2k views

1 answer

springboot dubbo 无法加载自定义org.apache.dubbo.rpc.Filter

springboot 集成dubbo，自定义过滤器无法被dubbo加载到代码 1.filter @Activate(group = {CommonConstants.PROVIDER, CommonConstants.CONSUMER}, order = - ... .web.filter.LogFilter debug 还请路过大神不吝赐教，多谢多谢...

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

0 votes

1.1k views

1 answer

小程序样式不生效？

如上图，在timeType中设置类的样式，不能生效，不知道为什么...

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

0 votes

1.3k views

1 answer

C# NSubstitude react to unsubsribe from event (operator -=)

I am trying to throw exception when unsubscribing from event. .NET Framework 4.8 I tried this: var sFE = NSubstitute. ... be null. Parameter name: handler' Please can you help me?...

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

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1.1k views

1 answer

java - How to save data from JEditorPane?

So first of all I want to use my JEditorPane as a "note field" and I want it to save the text, so I still can ... (Paths.get(fileName)))) { return ois.readObject(); } } }...

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

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1.5k views

1 answer

React Native - Header Right Icon wont display

Hi I am having problem with placing Right header Icon, please advise how to solve it. I got error " variable - navigation" not ... 16, paddingRight: 16, marginRight: 16 }} /> ) } }...

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

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1.2k views

1 answer

drone 如何将多个仓库的配置文件托管到远程仓库？

我有很多个仓库，自然会有很多 .drone.yml 文件，我想把它们统一放到一个仓库中，请问该如何做？我在 drone 官方的论坛里得到一个回答我们提供全面的文档和一个入门项目，以创建可用于从 ... ://docs.drone.io/extensions/configuration/ 但是根据这个我并不能做到我想要的结果，请问大家谁知道怎么做？...

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

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1.2k views

1 answer

js找出重复的字符串

规则: 找出指定长度的重复的字符串, 未匹配则返回空字符串 function getSameStr(str, n) { // } const res = getSameStr('71235912304', 3) console.log(res) // '123' 希望得到结果: '123'...

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

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1.4k views

1 answer

c# - How to pass empty string as a parameter to MVC ActionMethod from Javascript

I have an ActionMethod [HttpGet] [Route("ControllerName/IsUniqueNotificationName/{notificationName}")] public IActionResult ... } Could someone help me with this issuw...

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

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1.2k views

1 answer

局域网中如何代理域名？

有一个html文件，里面引用了一个谷歌的在线文件，但内网无法访问，所以会阻塞页面较长时间才返回结果，理论上html文件中不应该有出现引用其他域的文件，因为某些原因无法彻底修正。期望有个方案，统一设置代理，将该资源的访问指向一个可用或者内网中的地址。或者用nodejs在服务器上起个服务将资源重定向。...

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

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1.2k views

1 answer

java - Sonarqube Critical error: wait for JVM process failed Windows

I am new at using Sonarqube and I have an issue that maybe you can help with. I am working in a development ... error: wait for JVM process failed Can someone please help me?...

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

0 votes

1.7k views

1 answer

web deployment - 404 Failed to load resource Deploying Flutter Web App to GitHub Pages

I am trying to deploy my Flutter app to GitHub Pages. App runs fine with flutter run -d chrome and builds ... pages link: https://learyjk.github.io/superpacecalcweb/ Thank you!...

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

0 votes

1.5k views

1 answer

vue display:none,@click @change失效有啥办法解决吗

外层的dom设置了display：none，里面的的插值{{XXX}}都没问题，但是@click @change 都是失效了，请问这是什么问题，感谢，有其他思路解决吗 <div class="tt" style=" ... /form> <a class="sub-tt" @click="submitAfterForm()">下一步</a> </div>...

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

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1.5k views

1 answer

js如何使用Proxy代理，实现读取window下的变量时改变其默认行为

这是一道题，实现console.log(a == 2 && a === 3 && a == 4)为true: 用Object.defineProperty的方式去实现不难，然后不都说可以用Proxy去实现Object.defineProperty的功能 ... ) console.log(a == 2 && a === 3 && a == 4) //true...

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

0 votes

1.3k views

1 answer

React如何处理大量input表单的场景

我的理解是有两种情况 1.当input为受控组件，即input的渲染依赖于state的变化, 用value绑定state （输入 => 改变state => 重新渲染） 2.当input为非受控组件，渲染不依赖state，是直接对dom的输入（输入 ... 用非受控组件，渲染减少了，但是无法阻止用户输入一些你想过滤的字符请高手指定一下该如何处理~...

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

0 votes

1.4k views

1 answer

使用uni-app开发，微信小程序端组件绑定key使用问题

使用uni-app 开发，利用Vue特性给组件绑定key ,在绑定的key发生变化是，对应组件动态更新，app 和 h5端使用没有问题，微信小程序端key值变化，组件不更新，这个问题如何解决?...

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

0 votes

1.2k views

1 answer

html - main tag completely ignores third child element of the <div class="options">

var bannerStatus = 1; var bannerTimer = 3000; window.onload = function() { bannerLoop(); } var startBannerLoop = setInterval(function() ... premium</p> <p>$12.99 - gold</p> </div>...

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

0 votes

1.4k views

1 answer

node-excel-export报错应该怎么解决呢？

在node项目中，启动项目npm start，node-excel-export插件报错，现在mongodb数据库是空的没有的数据，报错和这个有关系吗？...

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

0 votes

1.3k views

1 answer

请教一个js数据格式装换问题

有没有比较好的方法吧图一的数据装换成图二的样子，规则是同名的key和value合并，组装成父子级的关系，而且leve可能有很多层可以嵌套很多层，请问下有比较好的方法吗?...

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

0 votes

1.6k views

1 answer

python - Filenotfound error while running conda clean but file exists

i am trying to clean conda by running: conda clean --all However, it gives the following warning: WARNING: C:Usersmyname. ... get a bit closer to getting my conda to work again....

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

0 votes

1.4k views

1 answer

如何在JS中同步修改vue中的变量

index.js 里主动改变的数据怎么赋值给vue文件里面的变量？？？除了使用vuex、sessionStorage及localStorage 还有没有别的好办法.......

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

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