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What are sessions? How do they work?
...hat they store some info in a key value pair on the browser. But I have a little confusion regarding sessions, in a session too we store data in a cookie on the user's browser.
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How do I edit /etc/sudoers from a script?
I need to edit /etc/sudoers from a script to add/remove stuff from white lists.
12 Answers
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Hidden Features of C++? [closed]
No C++ love when it comes to the "hidden features of" line of questions? Figured I would throw it out there. What are some of the hidden features of C++?
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Why would you use an ivar?
...lation
If the ivar is private, the other parts of the program can't get at it as easily. With a declared property, the clever people can access and mutate quite easily via the accessors.
Performance
Yes, this can make a difference in some cases. Some programs have constraints where they can not use ...
What is move semantics?
...t finished listening to the Software Engineering radio podcast interview with Scott Meyers regarding C++0x . Most of the new features made sense to me, and I am actually excited about C++0x now, with the exception of one. I still don't get move semantics ... What is it exactly?
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“From View Controller” disappears using UIViewControllerContextTransitioning
I got one problem and i have described it below.
17 Answers
17
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Can comments be used in JSON?
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No.
The JSON should all be data, and if you include a comment, then it will be data too.
You could have a designated data element called "_comment" (or something) that would be ignored by apps that use the JSON data.
You would probably be better having the comment in the processes that gene...
Is VB really case insensitive?
I'm not trying to start an argument here, but for whatever reason, it's typically stated that Visual Basic is case insensitive and C languages aren't (and somehow that is a good thing).
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How to implement the factory method pattern in C++ correctly
...'s this one thing in C++ which has been making me feel uncomfortable for quite a long time, because I honestly don't know how to do it, even though it sounds simple:
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What does string::npos mean in this code?
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It means not found.
It is usually defined like so:
static const size_t npos = -1;
It is better to compare to npos instead of -1 because the code is more legible.
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