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Checking if an Android application is running in the background
... completely reliable:
The right solution (credits go to Dan, CommonsWare and NeTeInStEiN)
Track visibility of your application by yourself using Activity.onPause, Activity.onResume methods. Store "visibility" status in some other class. Good choices are your own implementation of the Application o...
Go > operators
Could someone please explain to me the usage of << and >> in Go? I guess it is similar to some other languages.
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How does free know how much to free?
... array), but I do not have to pass the size to the free function. Why not, and can I use this same technique in my own functions to save me from needing to cart around the extra variable of the array's length?
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Dealing with “java.lang.OutOfMemoryError: PermGen space” error
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The solution was to add these flags to JVM command line when Tomcat is started:
-XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled
You can do that by shutting down the tomcat service, then going into the Tomcat/bin directory and running tomcat6w.exe. Under th...
Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...s no such thing as "unsigned integer overflow") means undefined behaviour. And this means anything can happen, and discussing why does it happen under the rules of C++ doesn't make sense.
C++11 draft N3337: §5.4:1
If during the evaluation of an expression, the result is not mathematically de...
What is AppDomain? [duplicate]
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@AgentFire: If some code running in some thread and some AppDomain calls code from another AppDomain, then the thread "crosses" the AppDomain border and runs code from that other AppDomain. So threads do not belong to specific AppDomains...although one can say that a threa...
Converting Dictionary to List? [duplicate]
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Your problem is that you have key and value in quotes making them strings, i.e. you're setting aKey to contain the string "key" and not the value of the variable key. Also, you're not clearing out the temp list, so you're adding to it each time, instead of j...
How to list the size of each file and directory and sort by descending size in Bash?
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Simply navigate to directory and run following command:
du -a --max-depth=1 | sort -n
OR add -h for human readable sizes and -r to print bigger directories/files first.
du -a -h --max-depth=1 | sort -hr
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Getting error while sending email through Gmail SMTP - “Please log in via your web browser and then
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I know this is an older issue, but I recently had the same problem and was having issues resolving it, despite attempting the DisplayUnlockCaptcha fix. This is how I got it alive.
Head over to Account Security Settings (https://www.google.com/settings/security/lesssecureapps) and enable "Ac...
Convert List to List
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The way to make this work is to iterate over the list and cast the elements. This can be done using ConvertAll:
List<A> listOfA = new List<C>().ConvertAll(x => (A)x);
You could also use Linq:
List<A> listOfA = new List<C>().Cast<A>().ToList()...