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Using MemoryStore in production
... sessionStore.get(sessions[i], function() {} );
}
});
}
Now just call sessionCleanup periodically via setInterval() and you have automatic garbage collection for expired sessions. No more memory leaks.
sha...
Why doesn't .NET/C# optimize for tail-call recursion?
...s support tail call optimization, but the language-specific compiler must know how to generate the relevant opcode and the JIT must be willing to respect it.
F#'s fsc will generate the relevant opcodes (though for a simple recursion it may just convert the whole thing into a while loop directly). C#...
Android ViewPager with bottom dots
...upvoted before I ask the question, because it already helped me a lot, but now I wish I can apvote +2 or +100 :) because adding the onPageChangeListener worked perfectly for me! And just to make it clear for anyone that may use this, you need to do your updates on the onPageSelected callback only, a...
What is the dependency inversion principle and why is it important?
... Consider a dependancy graph for some objects. Apply DIP to the objects. Now any object will be indpendent of the implementation of the other objects. Unit testing is now simple. Later refactoring for reuse is possible. Design changes have very limited change scopes. Design problems don not cascad...
How to force GitHub Pages build?
...\System32\bash.exe" -c " \"./$(grep -oE '[^\\]+$' <<< '%L')\";"
Now double-click the script wheneven you want to rebuild your GitHub page. Done!
If you use Linux/Mac, running the script is as same as running other scripts. Done!
Additional notes for the solution:
This solution utilize...
Can a project have multiple origins?
...rebase/push on there behalf by using there fork and are able to merge code now, not tomorrow).
– Benoit Drapeau
Oct 20 '17 at 3:04
...
Convert .pem to .crt and .key
...pem
or
openssl rsa -in private.pem -pubout -out public.pem
You’ll now have public.pem containing just your public key, you can freely share this with 3rd parties.
You can test it all by just encrypting something yourself using your public key and then decrypting using your private key, fi...
Google Chromecast sender error if Chromecast extension is not installed or using incognito
... see this fixed in stable Chrome June-July 2016. Let's see ...
This is a known bug with the official Chromecast JavaScript library. Instead of failing silently, it dumps these error messages in all non-Chrome browsers as well as Chrome browsers where the Chromecast extension isn't present.
The Chr...
Root user/sudo equivalent in Cygwin?
...ith the following content:
#!/usr/bin/bash
cygstart --action=runas "$@"
Now make the file executable:
$ chmod +x ~/bin/sudo
Now you can run commands with real elevated privileges:
$ sudo elevatedCommand
You may need to add ~/bin to your path. You can run the following command on the Cygwin ...
super() in Java
...ed within a constructor to call the constructor of the parent class.
OK, now let’s practically implement these points of super().
Check out the difference between program 1 and 2. Here, program 2 proofs our first statement of super() in Java.
Program 1
class Base
{
int a = 100;
}
class S...