Recent questions in Technique[技术]

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以下两个JSON需要合并 [ { "playerName": "小张", "updatedAt": "2017-03-28 10:03:57" } ] [ { "playerName": "小王", "updatedAt": "2017-03-28 10: ... replace('[]',',')+')'); 请问如何能将把JSON中段的 [] 替换成 ,...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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395 views

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PHP里面使用trait+interface配合工作是不是可以完美实现多重继承？

基本上就是如题所说了。感觉挺好用的。目前我唯一感觉到的微小麻烦，就是ide不会认为两者的方法有关联。回答的人最好有相关的尝试。并不是只用trait，而是和接口配合使用。...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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B-树比二叉查找树好在哪里？

为何我们需要B-树？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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738 views

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c# - Automapper: Map property name from source to destination

I have a source class like this: public class SuspenseRequest { public string LineOfBusiness { get; set; } public ... do I perform this mapping with Automapper? Thanks in advance...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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618 views

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您觉得映客、陌陌等的直播的录屏是怎么实现的呢（IOS端）？

大概说说就行，哪怕一个库的名字！...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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425 views

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php - Missing of mysqli extension in xampp phpmyadmin

i changed my php version on local server.. After change the php version when i opened localhost/phpmyadmin then ... extension is missing. Please check your PHP configuration"....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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506 views

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php如何把多个一维数组转换成一个二维数组

比如多个一维数组如下 array(2) { ["address"] => string(6) "广东" ["tongji"] => string(1) "10" } array(2) { ["address"] => string ... address"] => string(6) "广州" ["tongji"] => string(1) "4" } }...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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472 views

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团队/用户/消息提醒，数据库及设计模式探讨

业务很简单：组建团队，用户可被拉入多个团队，每次拉入或移出的时候有消息通知；数据库设计： team{id,uids} user{id,tids} msg{id,uid,title,content,status} 实际操作：新建一个 ... uids,tid} team{id} 增删倒是没什么问题但是读user所在的team就麻烦了还是存在问题...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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382 views

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gitlab托管，git clone 失败？

ssh key已经上传，如下图...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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element ui如何自定义某一列的内容。

由于数据来源的那个组件是有包含el-table的那个组件的祖父组件，比如说我在A组件请求到数据，然后要先经过一个公用的B组件，才能到达包含有el-table的C组件（即A--B--C--el- ... 示例（单页应用），element ui的API中有提到el-table-column具有render-header属性，但一用就报错，望大神赐教~~...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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json.net - Serialize and Deserialize JSON with different property names for different use cases

I have data stored in a database with short field names to save space. When I load these into my .NET Core app, ... can either use the short or long names when convenient. Thanks!...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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240 views

1 answer

node.js - Mock node js Controller function - getSubscriber which calling to service

I have developed the node js code as MVC architecture. The folder structure is Controller --> service -> model. And I have ... res); expect(res.statusCode).toBe(200); }); });...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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513 views

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json - How to remove the assertion error in python test code?

These are the testing methods for prediction def test_get_prediction(input_params, output_params): exec_log.info("Testing started for ... {"predicted_label": "+" ...........

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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317 views

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webcam - OpenCV different Cameras, with same settings has different FPS

Can someone explain, why on the same program, (program doesn't really matter I think, as it's the same on pure continues ... (30.000 fps) Interval: Discrete 0.040s (25.000 fps)...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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733 views

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python - ValueError: could not convert string to float: '2.283.00 - 5.331.00'

I'm creating a program 'Build A Python App That Tracks Amazon Prices!' but when I run the program it gives ValueError: ... print("Email has been sent!") server.quit() check_price()...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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251 views

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免费数据存储的api问题

请问一下有没有云存储后端 api 的服务,因为不会后端, 想写一个app,然后把数据存储在云服务上面! 自己调用api来获取数据, 返回的json字符串可也自己定义, 的那种服务有吗? 比如我存储一个账号在云服务上面的数据库里面, 然后我通过api调用了,返回回来的数据就是我存储的那些数据,json也可以自己定义的有吗 :D...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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729 views

1 answer

routes - How can I customize Joomla! Tag URL in Custome Component?

I have a Joomla! Version 3 Custom Component, "com_news" for publishing newspaper. I have a Front-end view named, " ... standard "build" and "parse" method. Thank you in advance....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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679 views

1 answer

bash - not able to start elastic's enterprise search, app search, as background process on Debian 10 OS

Elastic search and enterprise search are installed successfully on a Debian 10 and I could able to start the enterprise- ... run this command to start it as a background process?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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194 views

1 answer

SQL 删除表中的多余数据

想要把某表单中 token项的1491357222的数据全部删除，请问sql语句要怎么写，可以直接把这个表里面的这部分就都删除掉了，谢谢...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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461 views

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How to use fail2ban for Nginx error "Primary script unknown"

I use Ubuntu 20.04 and Fail2ban, but errors like this are not filtered. This error appears in /var/log/nginx/error. ... . I'm having trouble building a proper regex on filter.d...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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456 views

1 answer

关于Object匿名内部类的一些问题

class Demo1 { public void fun() { System.out.println(new Object(){ int age = 23; String name = "李四"; public String toString() { return name ... (); de.fun(); } } 这个代码没有了输入这是怎么回事呢？？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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389 views

1 answer

excel - Textbox to filter all values that matches in range

I have been using below VBA code to filter the data by typing starting words in textBox and it works great. The ... ActiveWindow.ScrollRow = 1 End If Set bul = Nothing End Sub...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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174 views

1 answer

ngnix 配置问题

手机和pc端都在一个网站目录，但是pc对应一个网址，手机对应一个网址，nginx 对应的入口文件 m.php 访问不到，一直访问的是index.php，nginx的虚拟主机配置了对应的不同文件 index m.php; if (!-e $request_filename) { rewrite ^(.*)$ /m.php?s=$1 last; break; }...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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223 views

1 answer

问个组件注册的问题

这里为什么components里面只填Date 不是应该 Date: {template: "Date" }么求解释...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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542 views

1 answer

node.js - MongoDb mongoose deprecation warning {useUnifiedTopology: true} but it is already set to true

when i trying to connect mongoDb using mongoose deprecation warning appears i add option to the code but stil warning ... }); it appears {useUnifiedTopology: true} warning only...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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482 views

1 answer

Django自带分页功能的跳页请求时页面接收非常慢

1 环境说明 Django版本：1.10.6 2 现象描述使用Django自带的分页功能，view和html完全按照官方文档的代码( https://docs.djangoproject.co... )来实现，分页功能可以实现，点击下一页或者 ... </a> {% endif %} </span> </div> 不知道各位有没有遇到过这种情况，谢谢！...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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258 views

1 answer

How do I use functions in Arduino C++?

I'm an Arduino beginner and I want to write a little program that plays notes when I press a button (also prompts to press ... (analogRead(BUTTON) == 1023) { playTone(255, 1); } }...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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236 views

1 answer

javascript - How to convert js textarea to java String?

I want to send data from frontend (ReactJS) to backend (Spring BOOT). I want to receive "row1 row3 row5". How ... /${text}`) } Google Chrome console Java variables values Thanks!...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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