OStack Q&A-Knowledge Sharing Community

0 votes

935 views

1 answer

问题描述海康威视设备网络sdk预览获取的码流如何转换推送到rtmp 问题出现的环境背景及自己尝试过哪些方法海康的接口文档预览接口NET_DVR_RealPlay_V40中预览参数的播放窗口句柄（hPlayWnd）可以设置为空值，直接设置回调函 ... 待的结果是什么？实际看到的错误信息又是什么？通过海康sdk的预览回调，获取的码流，转换推送到rtmp...

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

0 votes

1.1k views

1 answer

javascript - How to detect a click on a list element?

I have this html code: <div id="wordListDiv"> <ul> <li id="word_0">bateau</li> <li id="word_1">braguette</li> ... the switch/case statement when the user clicks on a "li" element?...

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

0 votes

1.3k views

1 answer

mysql - This correlated subquery example seems wrong

I found this example on https://sqlbolt.com/topic/subqueries Isn't the "dept_employees" on the last row of ... 1054. Unknown column 'dept_employees.department' in 'where clause'"...

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

0 votes

1.7k views

1 answer

sql - Column Unknown Firebird Python

I'm trying to make a GUI with python and tkinter for a firebird database. When I try to write the input from boxes into the ... (0, END) data.delete(0, END) status.delete(0, END)...

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

0 votes

1.4k views

1 answer

Android Pie AOSP default Camera orientation issue: Camera sensor roated to 90 degrees right and Display is in reverse landscape mode

I am using an (Android Pie) AOSP Camera2 application. (packages/apps/Camera2) We are using Camera module OV5640. ... , Matrix.ScaleToFit.FILL); break; Thank and Regards, Devendra...

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

0 votes

1.7k views

1 answer

websocket结合php做数据实时展示页面

前端页面和服务器建立长连接以后，PHP怎么监控数据库发生变化进而给前端推送数据呢？求教...

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

0 votes

2.0k views

1 answer

如何知道golang启动的是哪个main函数？

项目中有两个main函数接口，每次日志需要知道启动的是哪个main函数，从而将日志写入不同的文件，请问在日志配置文件中怎么知道启动的是哪个main函数？...

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

0 votes

2.1k views

1 answer

typescript - How to properly use default values for properties on Angular 11 / TS 4?

I researched a lot but couldn't find out what happened with default properties on angular 11/TS4. For example, on Angular ... please let me know if anything is not clear. Thanks!...

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

0 votes

2.3k views

1 answer

c# decoding byte[] doesnt detect null

I'm trying to decode the following byte array: byte[] buffer = { 0x31, 0x2e, 0x30, 0x31, 0x2e, 0x30, 0x30, 0x30 ... 't the ASCII decoder detect the string terminator (C-style) ?!...

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

0 votes

2.8k views

1 answer

python - Get BLOB file from phpMyadmin?

Hi all :) I've been programming recently in PHP and looking to convert BLOB files to show in a designated folder. ... $ajax_handler->add_response_data( true, $output ); }, 10, 2);...

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

0 votes

2.5k views

1 answer

java - Max possible requests per second performed with OkHttp client

I'm trying to configure OkHttp Client to be able to send as many HTTP requests per second as possible. I have the ... that? I'll appreciate any answers or ideas. Regards, Piotr...

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

0 votes

2.4k views

1 answer

elementUI做好的表格分页，分页是后台处理好的直接通过接口传过来的，现需求是让前端直接导出所有的数据，我该怎么做？

如图：现在有31条数据分两页展示页面上还有一个导出报表的按钮点击按钮的时候期望把31条数据都导出到Excel表格里面但是现在我只能导出一页的数据(也就是20条) 请问大佬们有什么办法没有 PS:现阶段只希望前端处理...

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

0 votes

2.6k views

1 answer

Appending html/text to existing html using Python's email package

I'm writing some code to send a body of html code with embedded images to many recipients. The text/images will be ... . with smtplib.SMTP('localhost') as s: s.send_message(msg)...

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

0 votes

2.5k views

1 answer

下拉option可以设置最大高度吗，超出显示滚动条

下拉option可以设置最大高度吗，超出显示滚动条...

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

0 votes

3.5k views

1 answer

r - How to subset .Rmd files in a directory using list.files

I use this code which I got from this blog to count the number of lines of code in my .R files in a particular directory: # ... : str_subset("[.][R]$|[.][Rmd]$") Any suggestions?...

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

0 votes

3.7k views

1 answer

My Excel file won't load all rows because it's too large

I'm having trouble fully opening an Excel file as it's too large (1.1GB). I'm currently selecting: Data > Get Data From ... , only extract rows where date in column A = 01/01/2000?...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.3k views

1 answer

javascript - When I run a script it tells me that filter is not a function. [Discord.js]

I have a script where you need to answer to the bot with yes (da in the script) or no (nu in the script) ... handled will terminate the Node.js process with a non-zero exit code....

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.2k views

1 answer

create-react-app 生成的react 项目，每个组件文件下都会生成一个dist文件，怎么去掉

create-react-app 生成的react 项目，每个组件文件下都会生成一个dist文件，怎么去掉。这个文件里面是编译好的js 和 css。发布的时候也不会带上他们，有什么用。如果去不掉怎么在git里把这些文件夹全部忽略掉...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.5k views

1 answer

swift - URLsession .failure crash the app because error is nil

I am trying to throw an error when I have status code 500. when I hit this line completion(.failure(error ... { completion(.failure(serializationError)) } }.resume() }...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.6k views

1 answer

[深圳] 大宇无限招聘 Java 开发工程师 20k ~ 40k

薪酬：20k - 40k 拉勾链接： https://www.lagou.com/jobs/7864772.html?source=pl&i=pl-7&show=1798f2a8d093454ea9297c175b64355f 职位诱惑：千万级业务 ... 南山区 - 储能大厦 17 层 B 单元微信 base64 encode：bmV3X0FpZGVu...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.9k views

1 answer

想开发一个在线查询书法字体书法家作品跟书法字帖电子书的app

类似书法碑帖大全这种的，本人不是技术，想成本最小化，方便多端比如h5网站、小程序、app多端有什么建议吗前后端有什么建议或者框架选择...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.2k views

1 answer

run_drnn.py: error: too few arguments参数问题

usage: run_drnn.py [-h] [-e EMBEDDING_INITIALIZE] [-es EMBEDDING_SIZE] ? ? ? ? ? ? ? ? ? ?[-o OPTIMIZER] [-l LEARNING_RATE] [-b BATCH_SIZE ... 是还是报错我少参数，有.config文件，但是没有在参数中，求求大佬帮帮忙...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.7k views

1 answer

fanotify文件实时监控无法使用gdb调试

fanotify FAN_MARK_MOUNT 模式，监控根路径，gdb fanotify监控程序时，ctrl+c ctrl+z 引起系统卡死，有人遇到过么？是否有解决办法？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.8k views

1 answer

c# - Will setting EntityState.Modified on root object add any new objects to database?

I'm using EntityFramework to link my C#/WPF project to a SQL Server database. I have an object that has ... EntityState.Modified; Will the above code add the new FirstNavProperty?...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.8k views

1 answer

js嵌套获取的数据如何拼接

小白提问，后台提供了三个接口分别给出三个层级的列表，我需要将这三个接口返回的内容进行拼接；数据结构如下： [ { label:name1, id:1, key:1, children:[ { label:name1- ... ,i)=>{ data.push({ label:item.name, id:item.id, key:i }) }) }) },...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.1k views

1 answer

reporting services - SSRS Table Cell Mailto link (Whether "Go to URL" Action or A HREF Link) duplicates and obscures table results?

I think I uncovered an actual, real Stack Overflow in SSRS Report Viewer/SSRS Report Builder: In each of many of our ... of overflow bug with long URLs? Or did I miss something?...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

15.1k views

1 answer

sql - Syntax error when using input parameter to create procedure

I'm getting this error Msg 103010, Level 16, State 1, Line 1 Parse error at line: 33, column: 15 ... ) connection.autocommit = True connection.execute(sql) connection.close()...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.6k views

1 answer

Time Zone issue in Azure Function app with consumption plan (Windows)

I'm using a Function App in consumption plan (Windows) to execute a C# function, but when the line of code ... contrary to the DateTime.Now statement whose result is in UTC....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Recent questions

Just Browsing Browsing

Most popular tags