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RT，我看很多视频站都切片成 m3u8 ，我想问一下这些网站都是怎么实现自动化切片的呢，ffmpeg我知道，但那些站长难道都是手动切好再传到服务器上的？这样一个站很多视频岂不是累死？有懂的朋友可以和我说说具体的解决方案吗，越详细越好，还是说有第三方服务，有的话可否推荐一下，纯小白，谢谢！...

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

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f# - mailboxprocessor does not terminate

I have a timeout exception (and I really intend to set a timeout) inside a message loop and I have tried to catch ... is setting a timeout (for example of 30 seconds) instead....

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

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spring boot+mysql+jpa如何根据实际需求获取指定的字段，并返回json

数据库表里存的数据有三个字段，id，name和age。用默认的jpa，bean的情况下，查询的结果返回了所有字段组成的json对象。如果现在只想要name和age的json对象，该如处理？...

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

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c - How to replace set_fs(KERNEL_DS) for a kernel 5.10.x module driver version

I've been updating a custom module driver to a 5.10.x linux kernel version. My driver adds a layer over a cdc-acm ... mixing user space / kernel space data? How can I solve it?...

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

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excel - When Cells match with certain columns in a table, do X

Because I'm a big noob at VBA I can't seem to get this problem solved. I have the following problem: I have an ... Next Else MsgBox "Negative result" End If Next Next Next End Sub...

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

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sql - Is there a way to retrieve a table column name based on cell value?

Is there a way to retrieve column name based on cell value in SQL Server 2016? Below is the table structure Col1 Col2 Col3 ... names where value = N i.e output should be Col1, Col3...

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

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mybatis foreach标签问题，为什么判断失灵，而且会默认加个中括号 [ ] ?

...

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

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某建筑消防逃生路线

结合BIM模型，在模型中显示应急逃生预案的线路，并实现路线运动，请问这个有实施方向，或者示例吗？...

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

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node.js - Using Let's Encrypt certificates on DigitalOcean App Platform for a HTTPS node app

I'm used to deploying HTTPS Node apps on DigitalOcean servers using Docker, the Express framework and the https package like ... my HTTPS app work. Does anyone here have an idea?...

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

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R counting appearance of a value across consecutive dates

I am trying to count the appearances of a value (across 2 columns) consecutively over the previous days. In the example this ... , but I can't get close to a solution. Thanks....

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

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layui按钮不放在form中，如何提交表单

layui的案例显示按钮要放在form中才能触发表单验证跟~~~~提交按钮如果不放在form中，如何提交表单，以及触发表单验证...

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

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axios 的空格问题

这个url上有一个空格，通过axios请求不通过，会500错误，但是走浏览器和工具都是可以的这是为什么...

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

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windows有提供类似托盘电量和网络界面弹出框的api吗

类似这种...

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

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555 views

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reactjs - Which files to cache in service worker created in public folder of the react app

I am trying to implement PWA with firebase cloud messaging push notifications (front-end only, for testing...). The ... code can be viewed at GitHub repo for the project....

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

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macos - Mac Swift Cocoa - hdiutil: attach failed - Device not configured

I am creating a MacOS app that automatically installs .dmg's in user Applications folder (copies .app in a dmg to / ... any fix for this error using one of these methods? Thanks...

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

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vba - How do I make a "data already exist" in visual basic(access database)

So I'm currently working on a program which consist of registration page and login page using visual basic and access ... input and the data that already exist in the database....

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

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ts 定义一个num：number 但是 num默认值不想写数字怎么破

ts 定义一个num：number 但是 num默认值不想写数字并且if判断的时候偶默认值还是false 怎么破写null和undefined都报错...

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

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c++ - Initializing a string with a single character in CPP

I want to initialize a string with a single character. The following code doesn't work: int main() { string s = 'c'; cout<<s ... cout<<s; return 0; } // Output: c[Finished in 0.8s]...

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

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python - Printing the broader and narrower concepts against the captured URI REF

I am having difficulty in printing the SKOS broader and narrower concepts against my URIRef (i.e. the output of the SPAQRL query). I ... " .} } """) for row in qres: print(row)...

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

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674 views

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火狐浏览器中title属性显示不全

火狐浏览器中title属性显示不全有没有大佬知道是怎么回事的...

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

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Python Django duplicate loop

i fetch two table from my db like this: query_tags = Tags.objects.all() query_usertags = UserNews.objects.all() context ... gonna duplicated cuz of second loop can you help me ?...

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

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csv - Save response data along with other label using Simple Data Writer

Is it possible to store response data along with other details , reason I need to check for requst which as taken long ... lister , view tree , but that does not solve the purpose...

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

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javascript - Data-bind link doesn't open web page in Ungerboeck

I am using a system called Ungerboeck to setup a web store. The app allows me to place custom HTML code inside a section ... , hasn't even loaded yet, like on the sign-in page....

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

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启动yarn失败，明明端口没有被占用，但是仍然无法连接？

如题，用vm虚拟机创建了几个linux主机，hadoop102机器为master，slave机器hadoop103上指定ResourceManager 在hadoop102上启 ... .ResourceManager: Returning, interrupted : java.lang.InterruptedException...

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

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为什么循环中使用同步总是没有效果呢？

总是先打印9999 后打印---- 我想执行完里面的接口调用然后执行打印怎么办呢？...

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

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C# MVC System.Web.Mvc.WebViewPage<TModel>.Model.get returned null

I am encountering a strange issue. I have a dropdown list for countries in a form that is populated from the Controller. ... joins to itself, I was not the one who created it....

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

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javascript - external JS file is not loading

The problem I'm facing is that I'm trying to link an external javascript file to my main HTML program but I can't ... the problem. Could you please check it? Thank you in advance....

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

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Flask多个Post,@api.route('/')正常,('/analysis/orderstruct')只有key

` import sys import os curPath = os.path.abspath(os.path.dirname(__file__)) rootPath = os.path.split(curPath)[0] sys.path.append(rootPath) ... {"sale_data": []}` 有大神能帮我解答下吗，感激不尽！！！...

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

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