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What is the difference between a 'closure' and a 'lambda'?
...tion here. Instead of asking random programmers who learned about closures from practice with certain programming languages or other clueless programmers, take a journey to the source (where it all began). And since lambdas and closures come from Lambda Calculus invented by Alonzo Church back in the...
What is so bad about singletons? [closed]
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Paraphrased from Brian Button:
They are generally used as a global instance, why is that so bad? Because you hide the dependencies of your application in your code, instead of exposing them through the interfaces. Making something glob...
Simplest two-way encryption using PHP
...it has not been updated since 2007.
There is even an RFC to remove Mcrypt from PHP - https://wiki.php.net/rfc/mcrypt-viking-funeral
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How to return 2 values from a Java method?
I am trying to return 2 values from a Java method but I get these errors. Here is my code:
14 Answers
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Can't subtract offset-naive and offset-aware datetimes
... have a timezone aware timestamptz field in PostgreSQL. When I pull data from the table, I then want to subtract the time right now so I can get it's age.
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Remove local git tags that are no longer on the remote repository
We use tags in git as part of our deployment process. From time to time, we want to clean up these tags by removing them from our remote repository.
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Can I use __init__.py to define global variables?
... subpackages and each with several modules. How can I access that variable from these modules?
4 Answers
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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
...&var.int2-&var.int1, &var.int1+diff==&var.int2)' is false.
From what I can say with my puny test cases, you are Stop at 0x0013f3: (106) Invalid instruction 0x00dd
printf crashes. "O_O"
gcc 4.4@x86_64-suse-linux
We like to think that:
..05 int has the size of pointers
but 'sizeo...
ASP.NET MVC - Find Absolute Path to the App_Data folder from Controller
What is the correct way to find the absolute path to the App_Data folder from a Controller in an ASP.NET MVC project? I'd like to be able to temporarily work with an .xml file and I don't want to hardcode the path.
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Xcode Simulator: how to remove older unneeded devices?
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Did you tried to just delete the 4.3 SDK from within the Xcode Package?
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs
please also delete the corresponding .dmg file in
~/Library/Caches/com.apple.dt.Xcode/Downl...