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Recent questions
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vue router.beforeEach登录拦截怎么用window.location.href跳转
怎么用next()去跳转...
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前端面试:设计一个数据结构
面试官说有一个业务场景,比如某件商品的子类型有三项,尺码 颜色 类型 用户点击这三项没有顺序,有可能先点尺码再点别的,也有可能先点颜色 但是每点击一项后,其它两项都会跟着改变 比如先点了M尺码后,颜色里断货的置灰,类型里断货的也 ... 每次点击前端这边怎么处理逻辑? 类似于图片上的业务场景,虽然图片上只有两项,面试官问的三项更复杂 求大佬解答,谢谢...
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Angular : Select Drop-Down (Mat-Select) with search-in and fill with DB. Problem with initial value
I'm currently create a request form in angular to search in a database SQL. I fill a Mat-Select with values in DB, and set the ... ) > -1) ); } } Where is my mistake ? Thanks x...
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C#: Error calling the camera on the tablet of Microsoft Surface-win10
[DllImport("avicap32.dll")] public static extern bool capGetDriverDescriptionA(short wDriver, byte[] lpszName, int cbName, ... ); SendMessage(lwndC, WM_CAP_SET_PREVIEW, true, 0); }...
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vue 使用Elementui的message,怎么设置出现的坐标呀?
...
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FFMPEG - how to fill-in an image when input stream or device are down?
I want to output a stream from FFPEG so that if the feed is down, the stream is populated with a "we are experiencing difficulties" image. Can I do that using only FFMPEG?...
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php - "Possible Unhandled Promise Rejection (id: 0): SyntaxError: JSON Parse error: Unrecognized token '<'" Trying to fetch from API
So i am trying to make a simple get Request and display the contents from mysql Database unto a React native form ... , "balance"=>$balance); echo json_encode($response); ?>...
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请问有没有vue-cli-service 与 webpack的相关资料
vue-cli-service 与 webpack 有什么关联,现有的vue项目,如何用webpack替换vue-cli-service,有没有两者同时使用的demo学习一下...
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请问有没有vue-cli-service
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actionscript 3 - Not all text is being displayed when using on-screen keypad
Created a keypad in Flash cs6 following a tutorial. Once done the "1" key and the "4" key work--those numbers ... (displayNum.text); } Thanks, appreciate any help you can give....
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actionscript
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233
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Java 8, function call: count the catched exceptions and the errors threw
In java8 I have to call an function and I ignore it's code. I have to count how many times it catched exceptions and how many times it threw errors....
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Java
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接口地址命名如何规范
接口地址的命名规范如何比较好呢? {{host}}/admin_user/user_lst {{host}}/adminUser/userLst 哪种比较好呢? 还有传参和返回参数 是用驼峰好还是下划线好呢 根据psr规范 变 ... = '', ]; 这种是下划线 return [ admin_user=>'xxx', admin_lst = '', ];...
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jenkins 换取清华的镜像源好像一直失败
...
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jenkins
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关于SpringCloudSecurity和SpringSecurity的选择
使用 Spring 初始化器新建项目的时候在 Security 栏目中包含: SpringSecurity OAuth2 Client OAuth2 Resource Server; 在 SpringCloudSecurity 中包括: ... 个 OAuth2 相关的单体应用,使用 SpringCloudSecurity 会更加方便么?...
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egg接收微信小程序uploadFile的时候报错说文件名无效怎么办?
在小程序端使用uploadFile这个api进行文件上传,但是在egg后端解析的时候报错Invalid filename: wx9220f63e27618216.o6zAJszr9FwetNkhGOInHMQlYm3U.GxG5xEWMgAtD30301a71288dc6933c315b1ab7a4b102.docx 怎么办?...
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sql - How can we display first row and last row of given table using rownum without using union clause
Sample Input Name | Value | Timestamp -----|-------|----------------- One | 1 | 2016-01-01 02:00 Two | 3 | 2016- ... 02:00 2016-01-02 02:00 Two 4 2016-01-01 03:00 2016-01-03 04:00...
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Pine Script - Custom Week
I am trying to create a pine script to select custom week for drawing pivot points. In India, NSE expiry starts ... ) line.set_x2(l4Line, bar_index) line.set_x2(l5Line, bar_index)...
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Pine
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322
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Electron 中 devtool 不能禁用与添加临时样式问题
在使用 9.1.0 的 electron 时发现 chrome-devtool 的 样式调整, 不能像 原本的可通过点击来禁用样式,与添加临时样式 如:旧版本 现:新版本 只能在 element style 中 添加临时样式 我觉得可能也是项目中其他的问题所以,把 package.json 也给出来...
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Electron
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397
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optimization - optimize an mysql request : inner join very long
I have a trouble with an sql request, which is short (0,07 sec) with a left join but very long when I need an inner join ... "/> </plan> </plan> </plan> </plan> </explain>...
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optimization
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javascript - Remove <script> with JS
I would like to remove everything inside of an HTML-section, using JS, but there are <script>-tags inside of the section and ... not remove the alert, why?"); </script> </section>...
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javascript
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242
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Tcpreplay
1.Tcpreplay做不到服务端能实时响应的回放 回答 :使用Tcpreplay回放Pcap流量,Tcpreplay只能保证发出去,如果想要服务端响应的话,需要使用tcpliveplay(使用tcpreplay回放tcp的时候,不能同步TCP里面Syn/Ack的编号) ... 此时目标为客户端,所以这个方向的流量,不会发往服务端,而是在客户端 3.待更新...
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c++ - Virtual key to character conversion depending on the locale
I can't translate a character according to the set keyboard layout.Tried several variants, but it doesn't work. I enter ... < 16; GetKeyNameTextW(code, name, 32); return name; }...
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c++
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342
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为什么IntelliJ IDEA ctrl+F9直接把服务重启了?
spring boot 项目 ,修改前端模板代码..每次ctrl+f9 或者 ctrl+s 都是自动直接把服务重启了. 每次修改一点点 东西 刷新页面都要重新输入账号密码 登录...好繁琐 怎么设置热更新啊 .不要服务重启......
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nexus3 通过 INSTALL4J_JAVA_HOME_OVERRIDE设置JDK路径不起作用
nexus3在linux起动时,通过 INSTALL4J_JAVA_HOME_OVERRIDE 设置JDK路径不起作用,貌似还是用的环境变量中指定的JDK,由于机器上环境变量设置的JDK版本是1.7, nexus3需要JDK 1.8才能启动,现在nexus3就是不能起来?是什么原因引起配置不起作用呀...
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nexus3
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matlab - Why when calculating impulse response of a filter (system) I get a "tail" at the end
I have measured time signals of input (pink noise) and output of a system. I need to calculate TF of a system and it's impulse ... ; tf_sym = conj(tf(end-1:-1:2));end Thank you!...
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NEST如何根据匹配模式(索引别名)获取所有匹配的索引
背景: 构造一个ESClient,通过一个通配符表达式去获取所有匹配的索引名称 IndexMatchMode是一个简单的enum,用来判断当前的匹配模式是通配符的还是读索引 ... result = await client.GetAsync(indexMatchMode); return indexNamesList; } 效果相当于Kibana结果截图...
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angular 模拟[(ngModel)]的双向绑定 报错
代码如下 app <!-- app.component.html --> <app-horizontal-grid [(username)]="username" ></app-horizontal-grid> [( ... ) { this._username = value; this.usernameChange.emit(value); } }...
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c语言写的俄罗斯方块,运行游戏时方块未能正常落地,哪位能给点指导意见
#include<stdio.h> #include<stdlib.h> #include<time.h> #include<windows.h> #include<conio.h> #define SPACE 32 // #define LEFT 75 // #define ... n=='Y') main(); } } return 0; } ///...
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How to add variables with command line in ansible?
i have to playbook for tower-cli command, which will create credentials with custom credentials type. - name: Create a valid ... used the sed command. What I am doing wrong here?...
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