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How to open, read, and write from serial port in C?
...cking
write (fd, "hello!\n", 7); // send 7 character greeting
usleep ((7 + 25) * 100); // sleep enough to transmit the 7 plus
// receive 25: approx 100 uS per char transmit
char buf [100];
int n = read (fd, buf, sizeof buf); // read up t...
async/await - when to return a Task vs void?
...id AsyncMethod2(int num)
{
await Task.Factory.StartNew(() => Thread.Sleep(num));
}
Yes, use async and await here, they make sure your method still works correctly if an exception is thrown.
for more information see: http://msdn.microsoft.com/en-us/magazine/jj991977.aspx
...
Add subdomain to localhost URL
...er (to work around the permissions).
– Lindsay-Needs-Sleep
Apr 4 '19 at 6:36
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎 ...
...整格式的 SQLite 数据库文件上传到应用程序的资产中，此函数就会将其复制到位。
注意：如果您导入的数据库尚未包含完整格式的“android_metadata”表，则 DatabaseCreated 事件将在首次打开数据库时触发。“android_metadata”表是 Androi...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
...m -f ${LOCKFILE}; exit" INT TERM EXIT
echo $$ > ${LOCKFILE}
# do stuff
sleep 1000
rm -f ${LOCKFILE}
The trick here is the kill -0 which doesn't deliver any signal but just checks if a process with the given PID exists. Also the call to trap will ensure that the lockfile is removed even when ...
What is the need of JSF, when UI can be achieved with JavaScript libraries such as jQuery and Angula
... thing with powerful control over HTML.
– Plain_Dude_Sleeping_Alone
Jul 19 '15 at 21:29
add a...
$(document).ready equivalent without jQuery
...('DOMContentLoaded', function() {
console.log('document is ready. I can sleep now');
});
Concerned about stone age browsers:
Go to the jQuery source code and use the ready function. In that case you are not parsing+executing the whole library you're are doing only a very small part of it.
...
How to write to Console.Out during execution of an MSTest test
... Debug.WriteLine("Time {0}", DateTime.Now);
System.Threading.Thread.Sleep(30000);
Debug.WriteLine("Time {0}", DateTime.Now);
}
Output
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See what process is using a file in Mac OS X
...n't work. I tried closing my laptop, figuring that would put everything to sleep and hopefully clearing the problem. That didn't work either. lsof continues to show Finder as the culprit, and it continues to show up grey in the UI.
– Victor Engel
Apr 12 '14 at ...
How to make Java honor the DNS Caching Timeout?
....printStackTrace();
}
try {
Thread.sleep(5L*1000L);
} catch(Exception ex) {}
i++;
}
}
public static void displayStuff(String whichHost, InetAddress inetAddress) {
System.out.println("Which Host:" + whichHost);
...