Jonic Developer Community

+2 votes

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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！...

asked Feb 5, 2021 in Others[杂七杂八] by ostack (1.4k points)

0 votes

532 views

1 answer

electron-vue 的 tray事件、托盘事件无法触发?

mac端 electron-vue 的 tray事件触发不了 chatFor/trayProblem/src/main/index.js index.js import { app, BrowserWindow, BrowserView, globalShortcut, dialog, Menu, ipcMain, Tray, screen, nativeImage ... 地址在 https://github.com/cc-electro... 希望大佬帮助一下，，谢谢了~...

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

0 votes

467 views

1 answer

【项目与工程】移动端中的webview项目文件如何进行组织分布与维护

如题，移动端有一些相互较为独立的webview项目（或者叫小页面合适）公用一套配置好的基础的 vue-cli （脚手架）；要如何公用？换句话说有一些零碎页面A，需要基于脚手架做，有一些零碎页面B，也需要基于这个脚手架做，然后并不希望每一些零碎页面都 copy 出一个仓库/文件夹/项目出来；期 ... 配置，问题是如果单纯像这样的话要执行npm run build时，会打包所有的页面（其实各个页面是独立的，并不需要全部打包），显得有些冗余如何优化更为合适？...

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

0 votes

541 views

1 answer

电商系统，随着业务越来越多，订单表字段会很多，请问表该怎么设计比较好？

### 问题描述业务越来越多，订单表字段会很多 ### 问题出现的环境背景及自己尝试过哪些方法目前是使用单表加详情表，使用订单类型区分不同的业务 ### 相关代码 ### 你期待的结果是什么？实际看到的错误信息又是什么？数据库怎么设计比较好！...

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

0 votes

381 views

1 answer

vuex使用了sessionStorage作为数据来源后，没有初始状态，无法监控？

//获取网站信息 const bloginfo = sessionStorage.getItem("bloginfo"); if (bloginfo) { this.$store.commit("setWebsiteInfo", JSON.parse(bloginfo)); } else { apiGetInfo().then((res) ... setItem("bloginfo", JSON.stringify(res.data)); }); //} 有大佬可以解惑否？...

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

0 votes

741 views

1 answer

Unable preventDefault inside passive event listener invocation？

video.js 在IOS滑动音量滑块报错？怎么解决？ video.js:1763 Unable to preventDefault inside passive event listener invocation event.preventDefault @ video.js:1763 ... video.js:14666 handleMouseDown @ video.js:16360 data.dispatcher @ video.js:1912...

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

0 votes

642 views

1 answer

正则表达式验证体重支持小数点输入前三位小数点后两位（例：100.23）

正则表达式验证体重支持小数点输入前三位小数点后两位（例：100.23）...

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

0 votes

625 views

1 answer

DolphinDB在数据节点上创建database时报错：need 2 datanodes, found 1

使用DolphinDB搭建了三个控制节点的高可用集群，集群信息如下：物理机1：controller1，agent1，datanode1，datanode2 物理机2：controller2 物理机3：controller3 我用GUI连上了控制节点1，执行下述代码： n=1000000 date=rand( ... failed to find enough datanodes for write, need 2 datanodes, found 1 请问怎么回事？...

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

0 votes

480 views

1 answer

mysql不同表数据求和并排序问题

主表 a 收入表 b b.a_id=a.id 有多条a_id数据导入收入表 c c.a_id=a.id 有多条a_id数据 laravel写的，以前功能都有，现在要做个排行榜,要求表a的各个id的总收入并降序排序，不合并表bc的情况下，mysql该怎么查...

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

0 votes

343 views

1 answer

对元素施加all:initial之后覆写line-height无效的问题

### 问题描述例子地址 https://codepen.io/qyingkou/p... 例子说明： parent设置line-height为10 son设置all:initial之后再设置line-height为1 从dev-tool的computedStyle面板看，值1是生效了，然而界面却保持着10的效果，诡异！ ### ... /p... 问题总结下：为什么子元素在先设置all:initial之后再覆写比父元素值还小的line-height就会失效呢？...

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

0 votes

882 views

1 answer

vue配置代理后，接口请求的Host和Referer都是同一个地址？

vue.config.js: ` proxy: { "/api": { //目标接口域名 target: VUE_APP_URL , ws: true, // 是否启用websockets changOrigin: true, //开启代理 pathRewrite: { "^/api": "" //重写接口 ... :当我直接在axios.js中将axios.defaults.baseURL = "http://dashboard.xxxx.com";的时候，接口又报跨域错误...

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

0 votes

898 views

1 answer

export a csv from ElasticSearch 6.8 kibana

I'm trying to export csv file from kibana es (6.8) But this is what I see: How can I import to csv file? Thanks!...

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

0 votes

414 views

1 answer

为何Windows共享目录下一些子目录不显示？

主机A的一个目录dirA已设置为共享目录，主机B可以通过网络路径访问。但是dirA下的一个子目录dir1不显示在共享文件夹中。子目录dir1已经设置为共享目录。...

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

0 votes

588 views

1 answer

go-fastdfs ./fileserver

go-fastdfs ./fileserver 启动时不时会挂要经常去启动他 linux 系统有没有什么办法让她一直启动或者是每个几分钟重启一次？脚本怎么写？我的 ./fileserver 是放在 cd /usr/local/goFastDFS 路径下的...

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

0 votes

755 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

838 views

1 answer

android - React Native: Get Lifecycle or LifecycleOwner in native module

I'm developing a native module for React Native which wraps the CameraX API. The CameraX API is a lifecycle-aware API, so it requires me to pass an ... or LifecycleOwner) instance from my React lifecycle? I'd appreciate any kind of help....

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

0 votes

1.2k views

1 answer

elasticsearch - How to use wildcard in elastalert rules

I need help in ELASTALERT I have a log message like this : log.info("Server is started at "+LocalDateTime.now()); and I need to write a query in rule for it: I ... *Server is*" It seems like its not working. Can anyone tell me how to do it?...

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

0 votes

1.9k views

1 answer

ios - Swift multidimentional array

I have .mlmodel file and I have to integrate it to the app. the input is 1x9x30 array. where 9 is the inputs from accel x,y,z ... roll as NSNumber yaw[[currentIndexInPredictionWindow] as [NSNumber]] = motionSample.attitude.yaw as NSNumber...

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

0 votes

1.6k views

1 answer

python - pandas reshaping dataframe with different length rows

I have a the following pandas data frame with the index on the left: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A17 a b 1 AUG) NaN NaN NaN NaN NaN ... time a ) is encountered then break to a new line. The real table has over 150 columns. thanks...

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

0 votes

1.7k views

1 answer

Mybatis 批量插入修改时返回自增主键

我的开发环境 pom 文件中 springboot 的版本号是 <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.4.RELEASE</version> <relativePath/> <!-- ... 后的返回值？我想要 list 中的多个对象实例都能获取 iid 自增后的返回值要怎么做...

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

0 votes

1.8k views

1 answer

Elasticsearch 查询嵌套字段，嵌套对象列表中限制只有匹配的才返回结果，怎么写 dsl

存储的数据是 { "id" : "xxxxx", "model" : "aaacc", "product" : "xxxxasdf", "idc" : "ccaa", "backup" : [ { "id" : 123, "type" : "ssh-11", "part" : "ssh-12", }, { "id" ... ", "backup" : [ { "id" : 123, "type" : "ssh-11", "part" : "ssh-12", } ] }...

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

0 votes

1.9k views

1 answer

web scraping - Python Scrapy - parse URL content for most recent updated date

I have a webcrawler/scraper that's written in Python using the scrapy framework. I've been trying to use the "last-modified" date to identify the most ... a more accurate method for collecting the date each page was most recently updated?...

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

0 votes

1.8k views

1 answer

我想在下拉框显示的信息父亲的name，但又更改的id值，不知道怎么做。

子数据v-model绑定的是name值，传入到下拉框中的也是父亲的name值，但是我想更改id值，就必须把v-model的值改成id，但是我想在下拉框显示的信息父亲的name，但又更改的id值，不知道怎么做 <el-form-item label="供应商名称" prop=" ... /span> <span class="select-notes">{{ item.id }}</span> </el-option> </el-select> </el-form-item>...

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

0 votes

2.1k views

1 answer

vue 内置代理服务器配置不生效？

今天在测试vue内置的代理服务器的时候出现了问题，在配置好之后所发的请求并没有改变 (代理配置没有生效) 因为使用的是vuecli3创建的项目，所以自己在与src同级下创建了vue.config.js文件，下面就是里面的代码 module.exports = { devServer: { proxy: { "/api": { ... 图中显示的，并不是我在vue.config.js中配置的接口地址找了好多文章也没有解决的方法！请大佬们指点迷津小子在这里谢过了 ...

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

0 votes

2.2k views

1 answer

python - How to compute auc score manually without using sklearn?

I want to compute auc_score with out using sklearn. I have a csv file with 2 columns (actual,predicted(probability)). And I want to compute auc score using ... is there there any better/any way to compute auc score with out using sklearn....

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

0 votes

1.8k views

1 answer

iview如何实现图片上传

iview如何实现图片上传带回显的功能有没有一个可用的demo...

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

0 votes

1.9k views

1 answer

onClose时返回退出用户信息，后台打印数据正常，怎么前端就UID会变呢？是哪里有问题？

老大，我在onClose时返回退出用户信息，打印数据正常，前端打印uid会变呢？是哪里有问题？ $close_user = ''; if(isset($connection->uid)){ $close_user = $worker->users[ ... ]; foreach($worker->connections as $conn){ $conn->send(json_encode($send_nr)); } var_dump($close_user);...

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

0 votes

2.7k views

1 answer

sqlite - Python sqlite3. Writing to a table from pandas read_csv results in error: Incomplete input

I'm running on Python 3.8 and have the following code: conn = sqlite3.connect('feedback.db') c = conn.cursor() read_feedback = pd.read_csv (r'C: ... : incomplete input I have played with the date formats, sequence of fields, now lost....

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

0 votes

1.7k views

1 answer

滴滴用什么数据库存储GPS信息

主要是考虑下面几点需求：存储时序的GPS点位点位的抽稀实时的最短路分析计算地理信息查询地理范围内搜索海量数据...

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

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