Recent questions

0 votes

249 views

1 answer

nanoframework - Missing method excpetion with Socket on Windows Emedded Compact

Following simple code: Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); results in ... what can be that wrong? Best regards: Stoyan...

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

0 votes

209 views

1 answer

GraphQL Apollo Angular return all props

I am new to graphQL and would like to know if there is an option to return all the props from an object. ... $orderNumber, comment: $comment, version: $version) } Is that possible?...

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

0 votes

557 views

1 answer

rabbitMQ如何实现向所有订阅topic广播的消费者推送一条消息，所有消费者都收到一次消息后销毁该消息

目前场景为有一个topic模式交换机，多个消费者订阅一个队列，当一条消息进入，保证该消息推送给所有消费者一次，随后销毁该消息（确认消费），尝试过很多方案都不可行，请问有什么好的方案么。现在有一个方案是使用fanout模式广播，每个消费者单独监听一个队列。...

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

0 votes

253 views

1 answer

java如何获取某个文件夹下所有.class文件？

目前我这边只完成了同步的循环扫描并获取.class文件，但是如果文件多的话这样效率会比较低，我这边目前想的是每遇到一个子文件夹就从线程池中获取一个线程去扫描，现在遇到的问题就是，如何把这些子线程的class文件统一设置到一个set集合并返回？...

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

0 votes

533 views

1 answer

dictionary - Python playsound doesn't seem to work with dictionaries

I'm trying to play a sound using the python playsound command. It works when I try the following: from playsound ... filepath1.mp3 to C that is compatible to the playsound command....

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

0 votes

198 views

1 answer

Having problems with making a chat in python

So basically I am trying to make a chat using python and I want to make a GUI for it using tkinter, I run the ... self.name}: {self.msg}" client.send(message.encode(FORMAT)) break...

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

0 votes

361 views

1 answer

python - How to prevent Tensorflow model from returning Nan values on prediction?

I am training a numerical dataset for predicting a particular output and while my training dataset returns the prediction ... Expected Outpute: ~array([[30]], dtype=float32)...

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

0 votes

225 views

1 answer

java - Protocol Buffer: Parsing and Compiling a .proto file at runtime

I am trying to serialize an object into a byte array using protocol buffers at runtime. To achieve this I need ... protoFromClass(Student); byte[] serializedPr = pr.serialize(s1);...

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

0 votes

384 views

1 answer

Shiro 分布式Session 使用Mysql 来存储解决思路 ?

Shiro 作为权限控制框架, 现在因要拓展多服务分布式 ,要求使用 Mysql 作为Seesion 存储解决方案 , 网上90%都是Redis , 关于Mysql的很少而且大多都是错误的, 恳请各位大佬给个思路 , 谢谢~~~...

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

0 votes

138 views

1 answer

如何优化该例中NOT IN的SQL

现有2张表 course course_id int 课程ID score float 课程得分，满分100,60及格 student_id int 学生ID student student_id int 学生ID name string 学生姓名一个学生可能有多个课程 ... 60要多，所以不应该特别针对此处使用MIN来做...（如果回复有我会再说明的）...

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

0 votes

660 views

1 answer

往数组对象里面push一个新的对象时，判断如果有id相同的就覆盖这个对象

往数组对象里面push一个新的对象时，判断如果有id相同的就覆盖这个对象改怎么做，用了许多方法去重都是保留原来的对象 let arr = [{ id:'1', name:'a' },{ id:'2', name:'b' }] ... arr) 怎么让打印出来是如下的对象 { id:'1', name:'a' },{ id:'2', name:'c' }...

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

0 votes

261 views

1 answer

研究课题选择

人工智能与机器学习，还有智能传感与控制，这两个研究方向分别具体都是做什么，哪一个比较好...

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

0 votes

68 views

1 answer

python - wondering how the function work step by step

def main(): move_discs(3,1,3,2) def move_discs(num, from_peg, to_peg, temp_peg): if num > 0: move_discs(num- ... function is just displaying a solution for the Tower of Hanoi game....

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

0 votes

211 views

1 answer

Is there an API to insert a Youtube 'subscribe' button into another service?

I have been fine a API for insert a group of channel's 'subscribe' buttons into another service. (ex. Inserting ... t know much about coding... Thank you for your help....

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

0 votes

148 views

1 answer

json数据组装

如何将这数据组装成： expensedate：5月 amout:10 20 30...

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

0 votes

502 views

1 answer

java spring security SSO 登录, 客户端启动报错

折腾了一两周了, 问题始终没有解决, 只能来这里求助了, 希望知道的朋友帮忙下! 下面开始说需 ... .populateBean(AbstractAutowireCapableBeanFactory.java:1378) at org.springframework.beans.factory.support.A...

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

0 votes

193 views

1 answer

python - Tracemalloc Error while running HTMLrequests()

I'm writing an Discord-Bot which sends an web-hook including infos scraped from an website. The Function which scrapes the ... get('some url' + self._url) result_slug = result.text...

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

0 votes

296 views

1 answer

求推荐一个绿色版的WEB服务器

需要装在U盘里，在不同的机房不同的电脑上使用，求推荐一个mysql+php+Apache的绿色集成环境。打算放在一个USB3.0的U盘，每个机房大概50台电脑的访问量刚看了USBWebserver，php和mysql的版本过低...

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

0 votes

387 views

1 answer

shell 脚本如何如何查找字符串的位置

例如： string="abcdefg" echo `expr index "$string" a` 上述查找为什么会报语法错误 syntax error...

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

0 votes

71 views

1 answer

JQuery为何不能运行？

初次调用JQuery的$()好像没有任何效果例如在下面的实例中，点击按钮后能够正常弹窗： <!doctype html> <html> <head> <meta charset="utf-8"> <title>测试网页</ ... = function() { alert("hello"); } } </script> 代码看了几遍也没看出问题 ...

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

0 votes

492 views

1 answer

headless cms - Gatsby/graphql: How to reuse fragments on many different models

Using Gatsby & DatoCMS. I have many (20) models that all contain links to other models. For example, on the home page "hero ... files. But I'm sure there's a better way. Thanks!...

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

0 votes

104 views

1 answer

python - elasticmock doesn't support some elasticsearch_dsl features

when I was introducing elasticmock for unit testing, I found out that it doesn't support the "must" and "should" features of ... issue ? If so, What do you advise me to do ?...

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

0 votes

404 views

1 answer

大佬们，script引入react-antd后，怎么把组件设置为中文啊？

好吧，终于搞清楚了首先引入转中文的js <script src="https://cdn.jsdelivr.net/npm/[email protected]/locale/zh-cn.js" ... TableList/> </antd.ConfigProvider> </div>, document.getElementById("container") )...

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

0 votes

552 views

1 answer

mongoose聚合查询中如何关联查询呢？

categories表： articles表：数据太多只展示了部分写了个接口请求categories里面的部分数据并用了聚合查询把相关的articles查出放在了newslist里面查出来的数据如下但是我想把newslist里面的categories变成详细的数据而不只是_id：好像不能用populate，该如何查呢？...

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

0 votes

476 views

1 answer

图片切换动画，修改src会重复发请求，求解决方案

我今天看到b站的首页头部有个移动模糊的效果，就自己尝试模仿了一下最后效果 Demo 但是这个小人的眨眼几张图片的切换我是用的更改 img 的 src 实现的，由于这个切换一直用定时器循环，会一直发请求，浏览器有时也会把请求 ... 动画是替换了 img 这个元素，但是我尝试了一下没有找到解决方法请知道的大神指导一下，非常感谢代码在 Github....

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

0 votes

311 views

1 answer

JavaScript: 块作用域是函数作用域的子集?望得到解答.

插图中来自红宝书第四版的一小段:(第26页) (图中分别是中英的版本,我都有认真去看) 如图是正在看红宝书第四版的一小段,这里说: 块作用域是函数作用域的子集 Block scope is strictly a subset of function ... 前面的矛盾了. 因此,我认为应该是作者的笔误了,应该调转过来才对: 函数作用域是块作用域的子集....

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

0 votes

1.1k views

1 answer

如何在 productFlavors 里修改 app_name ？

productFlavors{ a { applicationIdSuffix ".a" } } 总所周知在 productFlavors 里定义 applicationIdSuffix, 可以追加 appid 名称那么请问如何同样的追加 app_name 名称呢？我希望 a 渠道打包出来的比正常的多一个 .a...

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

0 votes

536 views

1 answer

javascript - Adobe Embed PDF API save annotated document with PHP to server

I recently added the free Adobe Embed PDF API to my website. I need to let visitors highlight or comment on the PDF ... jQuery knowledge that is why I need any example. Thank you....

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

Categories

Just Browsing Browsing

Most popular tags