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Avoiding recursion when reading/writing a port synchronously?
...1 can set some global lock state i.e. with a variable (be sure that it's thread safe). locked = true. Then Communication2 can wait until it's unlocked.
loop do
sleep 10ms
break if not locked
end
locked = true
handle_communication()
...
HTTPKeepAlive，开启还是关闭 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...96
server accepts handled requests
66542336512 66542336512 67713042963
Reading: 1945 Writing: 82 Waiting: 93869
其中，各项结果的含义如下：
Active connections: number of all open connections
Server accepts handled requests: nginx accepted 66542336512 connections, handled 6654233...
串口Read不到数据的问题 - 用户反馈 - 清泛IT社区，为创新赋能！
用户发送的是 8n1 的格式，但是ai2的串口貌似不支持这种格式。写串口正常，读串口为空，len为0。
目前经过测试验证，应该是 \n 作为结束符的。发送时，也是。
ai2使用 physicaloid 库完成的串口功能。
Pro Camera 扩展：专业级自定义相机，提供滤镜、降噪、对焦等高级功能 · A...
...
属性
IsFlashAvailable 闪光灯可用 {:.boolean .read-only}
返回设备是否支持闪光灯功能。
IsFocusAvailable 对焦可用 {:.boolean .read-only}
返回设备是否支持自动对焦功能。
IsZoomAvailable 缩放可用 {:.boolean .read-only}
返回设...
How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]
...y details
A DLL uses the PE executable format, and it's not too tricky to read that information out of the file.
See this MSDN article on the PE File Format for an overview. You need to read the MS-DOS header, then read the IMAGE_NT_HEADERS structure. This contains the IMAGE_FILE_HEADER structure ...
How can I use PHP to dynamically publish an ical file to be read by Google Calendar?
... Google search on PHP ical just brings up phpicalendar and how to parse or read IN ical files. I just want to write a PHP file that pulls events from my database and writes them out in ical format.
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Import error: No module name urllib2
...rom urllib.request import urlopen
html = urlopen("http://www.google.com/").read()
print(html)
Your current, now-edited code sample is incorrect because you are saying urllib.urlopen("http://www.google.com/") instead of just urlopen("http://www.google.com/").
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SQL Server NOLOCK and joins
... a performance-critical query I'd like to run and I don't care about dirty reads.
3 Answers
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What's the difference between jquery.js and jquery.min.js?
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jquery.js = Pretty and easy to read :) Read this one.
jquery.min.js = Looks like jibberish! But has a smaller file size. Put this one on your site.
Both are the same in functionality. The difference is only in whether it's formatted nicely for readabi...
How to add pandas data to an existing csv file?
...
I was able to accomplish it by re-read the 'my_csv.csv', then concat the new df, and then save it. If you know some easier method, please DO let me know. I appreciate!
– datanew
Nov 9 '18 at 21:56
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