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python - TypeError: Iterable command_prefix or list returned from get_prefix must contain only strings, not Cursor | Discord.py

I was implementing custom prefix usage with my sqlite3 db. I recieve this error whenever I try using the prefix: ... when_mentioned_or(f"{current_prefix}")(bot, message) Thanks!!!...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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大家目前做后台也是前后端分离吗？

想问下大家在公司做的后台也是前后端分离的吗？注意我说的这边前后端分离是完全分离，前端一个项目地址，后端一个项目地址，不是传统的mvc模式，虽然v和c也是分开的，但是还是在一个项目里...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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npm init webpack *** 报 command not found: create-webpack

需要将Vue cli项目转化为SSR服务端渲染，在初始化项目运行 npm init webpack *** 时直接报 command not found: create-webpack 请问有没有哪位大哥知道是什么原因啊？怎么解决？万分感谢...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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/ (w+).yunyouni.com / 如何排除 www 这种情况

正则： /(w+).yunyouni.com/ 要求：遇到www.yunyouni.com 不能通过正则其他xxx.yunyouni.com $1能拿到xxx 在线正则测试：https://regex101.com/...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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423 views

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amazon web services - Limiting access of EC2 app to our developer's IPs without using security groups

On AWS, our EC2 container hosts an app that runs both a backend and frontend server. The frontend server is our ... the frontend URL or the backend URL. Any suggestions? Thanks!...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Send updates from a PHP web app to an Android App without calling POST or GET requests from Android Side

I don't know if it has already been answered or not. But here is my case: I have a PHP web app that ... server receives the webhook, it forwards those hooks to my android app?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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docker-compose 容器间通信,连不上mysql

docker-compose 部署golang,mysql, 远程,127.0.0.1均可访问容器mysql, 但go容器里连不上. docker-compose.yaml文件如下: version: '2' ... 连mysql怎么连不上 dial tcp 172.21.0.2:3306: connect: connection refused...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue v-for 第一个元素少了 data-v-xxx 属性

因为元素有列表样式，但第一个元素少了 data-v 属性，导致样式不正确，麻烦大神帮忙看看我的代码是这样的 <van-cell v-for="message in messageList" v-bind:key="message.id" class=" ... van-cell> 但渲染的结果是这样的不知道为什么会这样，网上都找不到答案，也没有人可以问...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - What's a performance friendly way to pre-store 412.000 strings so they're searchable in Unity?

I have a CSV file with 412.000 strings in that I would like to pre-store locally so that I can deploy to ... am overlooking? The solution has to work locally. No HTTP calls....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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antd　<Table components={components}/> 如何传值 ?

目标：将dataSource2 传入select 复制代码到在线预览直接可运行查看: 在线编辑器地址:（不需要其它配置） https://codesandbox.io/s/fkc2j import React ... /> 这个antdesign结构不常见: body: { row: EditableFormRow, cell: EditableCell }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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kafka的权限问题

kafka是通过什么机制来控制权限的呢？不能随便一个生产者都可以往服务器里面写数据吧，也不是任何一个group id下的consumer都能消费数据把。...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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586 views

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ng-zorro开发angular 9，如何去除浏览器默认内边距？

我在stackoverflow上查的，都是在style.css或者index.html里加 html, body { margin: 0; padding: 0; border: 0; } 但是，ng serve打开来，还是有内边距，不管是 ... /div> <ul nz-menu> ... </ul> </nz-header> </nz-layout>...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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antd Popover 里面添加点击事件不能带参???

<Popover content={menu1} trigger="click"> <Button size="small"onClick={()=>this.onclikchangeGood(item)}>更改</Button> </Popover> 为什么不能传参?!怎么解决...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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475 views

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flutter如何修改bottomSheet的层叠顺序

我希望实现这样的布局，但是flutter的bottomsheet跟body不在一级...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dart - NoSuchMethodError: The method 'xxx' was called on null (flutter widget)

I know this question has been asked before but the previous questions and their answers have not helped me to figure out ... and there could be some concepts I would missing here....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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471 views

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spring boot data jpa EntityExistsException

我用spring data jpa 写了两个多对多关系的实体Role和Permission，想在关系表里添加一些额外的字段，参考了这篇文章：JAP多对多最佳实践一下时代码： Role 实体类 @Setter @Getter @AllArgsConstructor ... save()的动作，注释掉其中任何一个依然会报异常麻烦大家帮忙看看，谢谢了 ...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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318 views

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How do I execute a function on a page after navigating to it in Flutter?

I have a CupertinoDialogAction button in Flutter that navigates back to a page with a timer. I want to start the ... navigate to the timer page upon being clicked. Current Code...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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325 views

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firefox如何设置成显示上个页面请求的地址

firefox版本是74.0 打开F12-->网络-->仅显示本次页面请求的地址如何设置成即显示本页面的请求地址,也显示上一个页面的请求地址...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - spark-nlp 'JavaPackage' object is not callable

I am using jupyter lab to run spark-nlp text analysis. At the moment I am just running the sample code: import sparknlp ... traitlets : 5.0.5 I appreciate your help .. thank you...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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企业网站推广和企业网站优化怎么做？

目前在做食品行业，处于刚起步阶段，想做一个官网，求问企业推广和企业网站优化该如何做花较少的钱？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - NEXT.js API route wont accept POST requests

I have a Next.js API route set up at "pages/api/contact". When I process a GET request or navigate to localhost:3000/api/contact ... .json({ message: "This is not a post", }); } }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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es6中，有什么属性或者方法来替代callee和caller吗

本来想写在class内部的，发现提示strict mode下不能写arguments等所以问下，es6下有什么新的方法吗？也就是能获取class本身，以及调用该class的外部class对象感谢！...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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222 views

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js异步同步问题

在微信小程序中遇到了异步转同步的问题，代码如下： checkUserState(){ var _this=this; wx.cloud.callFunction({ name: 'getUserOpenInfo', success: async res=>{ var ... 是乱的怎么才能让上述异步方法转同步呢，等待异步方法执行完毕呢 ...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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524 views

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手机关机或者直接关闭网络，服务端收不到客户端websocket关闭的消息，请问怎么办才好？

但是在有网络的情况下，杀掉app进程，服务端能收到客户端websocket关闭的消息...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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482 views

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js mousemove事件相对位移

mousemove事件中，获取event.movementX，evnet.movementY, mdn文档上写，是当前screenX减去上次screenX得到的，但是打印出来的数据确对不上打印数据， x:event.screenX, y:event. ... 他的clientX，pageX 怎么样式精准获取每次事件触发后的鼠标位置，相对绝对的都要 ...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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274 views

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Cannot read property 'compilation' of undefined

目前再用dullplugin优化公司项目的编译速度,在npm i webpack之后一次报这个错误,百度了很久说是optimize-css-assets-webpack-plugin这个依赖包的版本太高的原因,但是我项目根被没有这个有知道的大佬救救我,谢谢!微信截图_20200508172300.png...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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312 views

1 answer

python - How to fit differential equation to a various data points

I have various data points which want to fit all of them with different differential equations. For example : t = [0.01, 6, 12, ... fit, 'b-', label='fit') plt.legend(loc='best')...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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197 views

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How to Commit Kafka Offsets Manually in Flink

I have a Flink job to consume a Kafka topic and sink it to another topic and the Flink job is setting as auto. ... > consumer = new KafkaConsumer<>(props); return consumer; } }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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