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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!...
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Feb 5, 2021
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welcome
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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...
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Jan 27, 2021
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r
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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...
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Jan 27, 2021
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Technique[技术]
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71.8m
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0
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698
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1
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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/...
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Jan 27, 2021
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Technique[技术]
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71.8m
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请问如何开发一个
0
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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...
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Jan 27, 2021
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71.8m
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npm
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640
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1
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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....
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Jan 27, 2021
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Technique[技术]
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745
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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?...
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Jan 27, 2021
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Kubernetes
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1.4k
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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?...
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Jan 27, 2021
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Technique[技术]
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871
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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...
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Jan 27, 2021
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Technique[技术]
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angular
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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 ...
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Jan 27, 2021
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71.8m
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vue2.6.10
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848
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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...
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Jan 27, 2021
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Technique[技术]
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71.8m
points)
python
0
votes
1.8k
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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?...
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Jan 27, 2021
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Technique[技术]
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71.8m
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google
0
votes
1.1k
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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...
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Jan 27, 2021
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Technique[技术]
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71.8m
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更新代码后
0
votes
1.1k
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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...
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Jan 27, 2021
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Technique[技术]
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71.8m
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javascript
0
votes
1.4k
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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
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Technique[技术]
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ibm
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votes
1.3k
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1
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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
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Technique[技术]
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71.8m
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0
votes
1.9k
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1
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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!...
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Jan 25, 2021
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web
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2.1k
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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....
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Jan 25, 2021
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71.8m
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swift
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1.4k
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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?...
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Jan 25, 2021
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java
0
votes
1.4k
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1
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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
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Technique[技术]
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71.8m
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0
votes
1.7k
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1
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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 ...
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Jan 24, 2021
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Technique[技术]
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71.8m
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vue3+element
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votes
1.6k
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1
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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?...
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Jan 24, 2021
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Technique[技术]
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71.8m
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0
votes
1.6k
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1
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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?...
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Jan 24, 2021
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Technique[技术]
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71.8m
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0
votes
1.7k
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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).```...
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Jan 24, 2021
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Technique[技术]
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71.8m
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java
0
votes
1.5k
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1
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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,...
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Jan 24, 2021
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如何将多个文件的export
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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...
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Jan 24, 2021
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71.8m
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python
0
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1.8k
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1
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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....
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Jan 24, 2021
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When
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1.7k
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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 ?...
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Jan 24, 2021
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Angular
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我刚建的项目,都还没动过main.ts 就有报错了。。是什么情况
...
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Jan 24, 2021
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Technique[技术]
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我刚建的项目,都还没动过main.ts
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