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

189 views

1 answer

python - Pass a function that accepts multiple arguments as an argument to a function

I'm studying how to pass a function as an argument. I've encountered a problem where I tried to invoke a passed-in function which accepts multiple arguments. Code: ... : unsupported operand type(s) for +=: 'int' and 'tuple' Thanks again!...

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

0 votes

190 views

1 answer

rows - Use lag function in R to call multiple values

I made a similar question : If condition is met, go 6 rows above and select the value in R and I received a very usefyl answer. Now I am trying to call instead ... is `lag(Hdwy, (1:6)) Any ideas? Should I use a different function instead?...

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

0 votes

491 views

1 answer

springcloud dubbo服务注册启动时异常

debug 发现，我的一个服务springcloud dubbo服务启动时，走到 post /nacos/v1/ns/instance接口，nacos返回500 弹出提示错误但是用官方给的demo的就可以启动，可以把demo的在bootstrap.yaml改spring.application.name的值，demo服务就启动不起来...

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

0 votes

406 views

1 answer

Appauth-js 授权的重定向路径怎么在electron窗口打开

现在重定向的页面直接打开浏览器显示了，想用electron窗口打开...

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

0 votes

91 views

1 answer

vue.js - How to use Pug Arrays with Vue?

I need to switch arrays of pug when the location changes, but I can't figure out how to use that. Pug Arrays: <template lang="pug"> - var activityListRu = [ { i ... else if (this.$root.$i18n.locale === 'en') { return activityListEn } }, },...

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

0 votes

171 views

1 answer

为什么console.log(a[6])结果是f(){console.log(i)}

为什么console.log(a[6])结果是f(){console.log(i)} ，而不是f(){console.log(6)} var a = []; for (var i = 0; i < 10; i++) { a[i] = function () { console.log(i); }; } a[6](); //10 console.log(a[6]); // function(){console.log(i)}...

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

0 votes

429 views

1 answer

vue如何实现在线excel编辑预览功能

请问各位大神如何实现在线边编辑excel...

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

0 votes

38 views

1 answer

联表查询如何写？

有三张表查询的结果里面需要包含一个项目有多少对应的case。三张表没有外键相连，没有外键表。请问sql应该如何写，或者给点思路可以。...

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

0 votes

197 views

1 answer

uni嵌入的webview，怎么调用uni的api

我嵌入的是html页面 <script type="text/javascript" src="//js.cdn.aliyun.dcloud.net.cn/dev/uni-app/uni.webview.0.1.52.js"></script> <script type="text/javascript" src=".. ... 报错 }); </script> 报错信息19:21:41.939 [ERROR] : Script error.filename:lineno:0...

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

0 votes

277 views

1 answer

go - Parsing prometheus metrics from file and updating counters

I've a go application that gets run periodically by a batch. Each run, it should read some prometheus metrics from a file, run its logic, update a ... Handle("/metrics", promhttp.Handler()) http.ListenAndServe("localhost:2112", nil) }...

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

0 votes

325 views

1 answer

Vue组件销毁时为什么没有vm = null这样的操作？

Vue在组件销毁的方法里，执行到最后并没有把vm = null,这个vm上还是有很多东西，会一直存在内存吗/...

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

0 votes

241 views

1 answer

The keyboard comes in front of the flutter HTML editor -FLUTTER

My problem is that the Keyboard comes in front of the HTML text editor widget when the keyboard opens. I make the whole page scrollable when the keyboard opens. it works ... : false, showBottomToolbar: false, ) ), ], ), ); This is my code...

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

0 votes

100 views

1 answer

javascript - p5Js, My sprite coordinate is not updating even thought the sprite is moving

I am creating a game similar to battle city in p5.Js using p5.play. and right now I am working on firing a bullet. I have made my sprite move using ... here is the link for the web editor: https://editor.p5js.org/somr_pel/sketches/ACXgrz0gk...

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

0 votes

222 views

1 answer

linux如何批量创建多个指令逻辑内容档案?

linux如何批量创建多个指令逻辑内容档案? 我期望 somefunction {1..3}.txt --内容="{3} test" 系统会建立 1.txt,2.txt,3.txt 内容分别是 1 test,2 test,3 test 目前我的知识1 : 可以使用 touch {起始..结束}. ... 1..10}.txt [email protected]:~$ ls 10.txt 1.txt 2.txt 3.txt 4.txt 5.txt 6.txt 7.txt 8.txt 9.txt...

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

0 votes

532 views

1 answer

vscode prettier {}里面怎样不换行。

已经设置宽度了, keybind.json里不会换 js里会换 "prettier.printWidth": 180, const store = createStore({ mutations: { increment(state)?{ state.count += 1;?}, incrementbypayload(state, ... .count;?}, setPostId(state, id)?{ state.currentPostId = id;?}, }, });...

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

0 votes

333 views

1 answer

Python Panda series - extract non empty/null to variable

Have the following DF: parent_path child level table field absent_flag logic 2 dummy{}.map{} amap 3 table_input1 MAP_A 1 5 dummy{}.array[] b_array 3 ... cleanup to the string but is there more elegant way to extract "FROM_ARRAY_TABLE" ?...

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

0 votes

243 views

1 answer

node.js - Access to azure web-app using passport-azure-ad-oauth2

I am trying to authenticate my Azure Web App with passport-azure-ad-oauth2 in Node JS using express I have tried to follow along with the documentation found here: ... 3000, function() { console.log("Server started on Port 3000"); });...

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

0 votes

388 views

1 answer

mqtt - Google Cloud IoT- How to publish to the same topic with multiple IoT devices and process it by cloud functions

In my project multiple IoT devices need to publish to a single topic and cloud functions listening to that topic need to process data published by IoT devices. ... 't sound right because in my project there can be thousands of IoT devices....

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

0 votes

323 views

1 answer

关于？用作返回值的参数类型，有没有什么隐患?

Java中，譬如下面的用法 static Map<?, String> getTest(int i){ if(i == 1) { Map<Integer, String> m = new HashMap<>(); m.put(3, "three"); return m; } else { Map<String, String> m = new ... >(); m.put("3", "three"); return m; } } "?"用作返回值的参数类型，有没有什么隐患...

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

0 votes

408 views

1 answer

远程分支名重复会覆盖么

别人推送了一个远程分支名a,我在本地的分支名也是a,推送到远程会覆盖别人的分支么...

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

0 votes

443 views

1 answer

怎么通过chrome的开发者工具的dom断点定位到源码

如何通过chrome浏览器的开发者工具的break on attributes modifications 来设置断点,快速定位到js或css代码的实现源码处. 具体例子如图下: 网址在这: https://www.cnblogs.com/summi... 想通过定位源码查看图中圈出的hover效果是怎么实现的. 当鼠标悬停到另外一个选项卡的时 ... 的断点.但是尝试了很多次,鼠标移动上去,并没有进入断点定位到js或者css代码处(压根没反应) 请教各位,具体应该怎么做呀?...

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

0 votes

476 views

1 answer

使用audio播放音频时，oncanplay始终没有执行

const audio = document.querySelector('#audioVoice') audio.src = `http://192.168.100.249:8080/index/${REGIONAL_MAP.get(this.state.listData[index].type)}${this.state.listData[index].content}` ... 是我写逻辑的时候一些代码，页面上是有声音播放出来的，下面的oncanplay就是没有执行...

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

0 votes

378 views

1 answer

Springboot Cannot resolve symbol 'springframework' 哪里出了问题

貌似解决了问题，maven 已经开始导入了. 原因：idea2019与maven3.6版本不兼容问题，解决办法，要么升级idea，要么降级maven 原来用的3.6.2，现在换成了3.3.9 哪里出了问题？ Unable to import ... Pushing properties took 460ms; general responsiveness: ok; EDT responsiveness: ok 2020-10-16 22:06:04,642 [ 11167]...

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

0 votes

365 views

1 answer

C# Google Calendar API - not valid Deadline calendar format

When I want to execute the event, it doesn't execute (which means that the event is not in my calendar), and I get the following error: ... .Events.Insert(ev, "primary"); projectEvent.SendNotifications = true; projectEvent.Execute();...

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

0 votes

427 views

1 answer

用sql语句怎么让结果集直接生成insert语句

mysql数据库管理工具有个COPY AS SQL INSERT 希望能用sql语句直接根据结果集生成insert sql语句...

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

0 votes

564 views

1 answer

各位中午好，想问下微信小程序有办法做到识别公众号二维码吗

各位中午好，想问下微信小程序有办法做到识别公众号二维码吗...

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

0 votes

435 views

1 answer

Angular rxjs concat 操作符连接类型不同的数据流

问题产生: 列表关系: 项目(列表1)>工作簿(列表2) 在列表2中,需要从多个接口取回数据,合并一起后,展示.使用`concat`操作符,如下操作,输出结果,只有`this.projectsTem`的数据. `this.projectsTem ... ... this.workbooks = this.dataServe.getWorkbooks(this.projectId).pipe(concat(this.projectsTem)) 列表1: 点击Data展示列表:2...

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

0 votes

403 views

1 answer

Vue3 保存持续存在的Dom元素

在写一个 Vue3 的组件，其中有一个功能为将 div 的每次滚动距离为自己控制的固定距离实现思路：通过使用Element.scrollBy() + WheelEvent 事件来实现由于这个是在写 Vue3 组件所以我保持着 Dom 操作尽 ... { function mousewheel(e){ console.log(e); // e.preventDefault(); console.log('wheel'); } return { mousewheel }...

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

Categories

Recent questions

Just Browsing Browsing

Most popular tags