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Disable Required validation attribute under certain circumstances

I was wondering if it is possible to disable the Required validation attribute in certain controller actions. I am wondering this because on one of my edit forms I do not require the user to enter values for fields that they have already specified previously. However I then implement logic that when...
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How to write asynchronous functions for Node.js

I've tried to research on how exactly asynchronous functions should be written. After a lot of plowing through a lot of documentation, it's still unclear to me. ...
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Safe (bounds-checked) array lookup in Swift, through optional bindings?

If I have an array in Swift, and try to access an index that is out of bounds, there is an unsurprising runtime error: 19 A...
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Why do python lists have pop() but not push()

... anyone know why Python's list.append function is not called list.push given that there's already a list.pop that removes and returns the last element (that indexed at -1) and list.append semantic is consistent with that use? ...
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How can I override Bootstrap CSS styles?

...feel it's better to create a separate custom.css file instead of modifying bootstrap.css directly, one reason being that should bootstrap.css get an update, I'll suffer trying to re-include all my modifications. I'll sacrifice some load time for these styles, but it's negligible for the few st...
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Is there a way to change the environment variables of another process in Unix?

On Unix, is there any way that one process can change another's environment variables (assuming they're all being run by the same user)? A general solution would be best, but if not, what about the specific case where one is a child of the other? ...
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How to write a Unit Test?

...red output for a normal case, with correct input. Now, implement the test by declaring a class, name it anything (Usually something like TestAddingModule), and add the testAdd method to it (i.e. like the one below) : Write a method, and above it add the @Test annotation. In the method, run your ...
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How is TeamViewer so fast?

Sorry about the length, it's kinda necessary. 6 Answers 6 ...
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How to get rid of `deprecated conversion from string constant to ‘char*’` warnings in GCC?

So I'm working on an exceedingly large codebase, and recently upgraded to gcc 4.3, which now triggers this warning: 24 Answ...
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How do I set the version information for an existing .exe, .dll?

...process, Visual Studio can also add/edit file resources. Just use File->Open->File on the .EXE or .DLL. This is handy for fixing version information post-build, or adding it to files that don't have these resources to begin with. ...