Jonic Developer Community

+2 votes

4.0k views

0 answers

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)

0 votes

344 views

1 answer

r - Manual calculation - instrumental variable with a tobit distribution in the 2nd stage, different results with robust errors

Cross Posted at CrossValidated. I am trying to correct my standard errors, when using an ols distribution in the first stage and using a tobit distribution in the second. ... 0.12450 0.1522 logSigma 0.05015 0.0009665 51.88 0 0.72270 0.7259...

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

0 votes

2.2k views

2 answers

AtomicLong中的incrementAndGet方法线程安全的么

public final long incrementAndGet() { return unsafe.getAndAddLong(this, valueOffset, 1L) + 1L; } AtomicLong源码中的incrementAndGet方,unsafe.getAndAddLong(this, valueOffset, 1L)方法我清楚是线程安全的，但是在+1之后不又是线程不安全了么。这点不是很清楚，请大佬讲解。这个是看java并发编程之美遇到的问题...

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

0 votes

698 views

1 answer

请问如何开发一个 C++ 在线编辑器环境，并且可以支持互动输入。这其中可能涉及到哪些技术。

因为在线教学的需要，需要浏览器可以运行 C++ 目前我开发已经支持，直接运行但是如果遇到输入语句，就无法正确执行 #include <iostream> using namespace std; int main( ) { char name[50]; cout << "请输入您的名称： "; cin >> name; cout ... 可能涉及到哪些技术以下的站点可以支持类似互动输入的操作，请问大神这是如何做到的？图上站点 http://cpp.jsrun.net/...

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

0 votes

694 views

1 answer

npm install git局域网安装怎么指定下载分支目录

package.js dependencies": { "wx_webappframework": "git+http://192.168.1.201:7093/r/WX_WebAppFramework.git" } 配置安装主分支到项目中 git+http://192.168.1.201:7093/r/ ... 西怎么写，我试了 git+http://192.168.1.201:7093/r/WX_WebAppFramework.git#h5master/wx 不可以...

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

0 votes

640 views

1 answer

JQ加通根目录下的文件为什么会有跨域

Access to XMLHttpRequest at 'file:///Users/saonianiphone6/Desktop/YK-SEM/sem-web/js/strings.properties?_=1603856497824' from origin 'null' has been blocked ... protocol schemes: http, data, chrome, chrome-extension, chrome-untrusted, https....

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

0 votes

745 views

1 answer

Kubernetes kubectl command to lookup Key in configMap or Secrets

I have about 10 ConfigMap and few secrets which stores my configuration in key and value. I am looking for any kubectl command which i can use to find my ... is there any kubectl command which lookup all configMap or Serects to find my key?...

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

0 votes

1.4k views

1 answer

运行yarn或者npm命令时总有"系统找不到指定路径"

运行yarn或者npm命令时总有"系统找不到指定路径"。虽然不影响正常使用，但也想知道是什么原因导致的。请问这是什么原因？...

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

0 votes

871 views

1 answer

angular - Trigger mat-expand-panel event with button in a different component

I am pretty new to Angular, and I am trying to implement a button in my search/filter bar that will expand the mat-expansion-panel on click, but the panels ... { this.panelOpenState = !this.panelOpenState } If more of the code is needed le...

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

0 votes

968 views

1 answer

vue2.6.10 与 element2.7.0 和 2.13.2 怎么会导致数据无法渲染？

在写项目时候用了element的组件el-select，开始element的版本是2.7.0，后来升级成2.13.2出现了问题，一个select选择框无法渲染接口获取的下拉数据控制台可以打印出返回的数据，页面下拉无数据，页面上显示数据也是空数组；开始以为是vue问题，使用了$set $nextTick ... 2的文档更新日志，并没有对 select 下拉框做出过多修改，有些只是对于 select 的 value 是 null/undefind 等问题修复其他并无修改 ...

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

0 votes

848 views

1 answer

python - How to compare multiple dictionaries to find out duplicate keys and how many times they are repeated

I need to compare more than 2 dictionaries to find out how many duplicate keys and how many times they are repeated. for example D1 = {'a' : 'value', 'b': ' ... for example: 4-a # key 'a' is repeated 4 times accross dictionaries 2-b 3-d...

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

0 votes

1.8k views

1 answer

google cloud platform - Problem with Microsoft login for Office 365 account via Firebase Auth in web when user is created with NodeJS Admin SDK

I noticed a strange issue with Microsoft login for firebase web. In our app's workflow, when a user is invited, we create a user using NodeJS Admin SDK ... Why is Microsoft Office 365 login via firebase auth (web) failing for this user?...

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

0 votes

1.1k views

1 answer

更新代码后部分手机打开微信公众号空白

用的是vue-cl2 webpack4.30.0 vue2.9.6版本路由用的(history)懒加载的方式前端用的nginx部署发生的场景：当代码在更新时，用户去访问微信公众号，打开页面空白更新完了代码后打开还是空白清除了微信浏览器缓存退出微信重新登录还是访问空白之前是可以正常访问公众号页面的（打开不了页面的） ... 就不上了你期待的结果是什么？实际看到的错误信息又是什么？看不到报错打不开公众号的页面在本地可以正常访问如何能解决上述问题？请多多指教...

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

0 votes

1.1k views

1 answer

javascript - How to display popup message before deleting a product in php

<a href='../../include/Query.php? deletepro=yes&proID=".$row['proID']."&proName=".$row['proName']."' onClick= 'confirmation()'><i class='fas fa-trash- ... how to embed or show a popup msg so please someone help to solve my problem. Thanks...

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

0 votes

1.4k views

1 answer

ibm cloud - Is Cloudfare Workers KV available from IBM CIS

is the Cloudfare Workers KV key value store available through IBM CIS? Thanks in advance for any advice....

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

0 votes

1.3k views

1 answer

React如何在公共组件中获取当前路由组件上的name值

我有一个公共的头部组件 <Headerle /> 和一个路由组件 <Route path="/index" component={index} name="indexName"> 头部组件在任何路由中都会显示。我想在每次切换路由组件的时候在头部组件中可以拿到路由组件的name，现在没有找到方法，求指教。...

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

0 votes

1.9k 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 successfully using flutter build web --release ... start... GitHub 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

2.1k views

1 answer

swift - NavigationView embedded in a UIHostingController has additional safe area insets

Anyone know how to deal with this? Seems as though when you have a UIHostingController with a NavigationView the following happens: Notice the big grey ... area. If I remove the NavigationView everything looks and functions as intended....

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

0 votes

1.4k views

1 answer

java - Use separate properties file for dependency jar and main war

I have 2 Spring Boot apps. AppA is a jar that primarily acts as a service (services, external api calls, etc). AppB is a war that has AppA as ... ("spring.config.name=myproject") .sources(MyApplication.class) .run(args); Any ideas?...

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

0 votes

1.4k views

1 answer

循环添加this.$set值都等于循环的最后一个值，是怎么回事

<view class="uni-column" v-for="(con, indexCon) in item.select_question" :key="indexCon" :class="indexCon == item.select_question.length - 1 ? '' : 'borderMin E7Bottom ... (_this.template[j].select_question[a], 'value', allArr[b]); } } } }...

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

0 votes

1.7k views

1 answer

vue3+element plus 走马灯高度自适应问题

### 问题描述在vue3 上使用element plus的走马灯制作首页轮播图；因为element plus的走马灯是定高的，所以在小屏设备上走马灯的比例会很奇怪走马灯的盒子默认是overflow hidden的，图片的显示也很奇怪 ### 问题出现的环境背景及自己尝试过哪些方法我试过让图片的width：100%；height：auto， ... 相关代码粘贴代码文本（请勿用截图） ### 你期待的结果是什么？实际看到的错误信息又是什么？求大神指点，感激不尽 ...

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

0 votes

1.6k views

1 answer

websocket端点无法获取spring的组件

@ServerEndpoint(value = "/chat/{token}") @Component public class ChatEndpoint { //用来存储每一个客户端对象对应的ChatEndpoint对象 private static Map onlineUsers = new ConcurrentHashMap<>(); @Autowired private ... 码文本（请勿用截图）你期待的结果是什么？实际看到的错误信息又是什么？...

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

0 votes

1.6k views

1 answer

script标签的自定义type会被浏览器解析吗？

我在看single-spa微前端框架时，其官方脚手架创建的项目有如下一段html文本， <meta name="importmap-type" content="systemjs-importmap" /> <script type="systemjs-importmap" src="https://storage.googleapis.com/react. ... 这type很显然不是标准的 MIME 类型啊，浏览器会如何处理呢，上面这段文本起到什么作用呢？...

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

0 votes

1.7k views

1 answer

java - Error initialising spark context. Could not load yarn support

I was running a spark application in intellij and have set up all the environment variables. But I am getting below error.please assist 18/04/06 00: ... .loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method).```...

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

0 votes

1.5k views

1 answer

如何将多个文件的export const引入到一个文件?

现在我有多个api文件, 如下 a.ts import { GET } from "@/utils/http"; const NORMAL = "/__normal__"; export const loadMenus = () => GET(`${NORMAL}/user/v1/modules?page=home&module ... 在使用时 import { loadMenus } from "@/api/index"; loadMenus(); 这样的话我该怎么处理,...

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

0 votes

1.5k views

1 answer

python - Can I patch an arbitrary object instance to throw when used?

Motivation I have singleton objects I am replacing with new instances. I want to be sure that nobody uses stale references to invalidated objects. ... class and adds overhead to normal object operations before make_radioactive is called...

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

0 votes

1.8k views

1 answer

When a 64bit int is cast to 64bit float in C/C++ and doesn't have an exact match, will it always land on a non-fractional number?

When int64_t is cast to double and doesn't have an exact match, to my knowledge I get a sort of best-effort-nearest-value equivalent in double. For example ... more aggressive optimizations like gcc's -Ofast are known to break any of this....

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

0 votes

1.7k views

1 answer

Angular JiT 和 AoT 编译问题

在开发阶段，一般都用 JiT 模式，创建项目默认生成的也是此种模式。问题1：在打包部署时，只能用 AoT 模式吗？问题2：Angular 项目只能部署在 Java 项目里 webapp 文件夹下吗？...

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

0 votes

1.6k views

1 answer

我刚建的项目，都还没动过main.ts 就有报错了。。是什么情况

...

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

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