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How do iOS Push Notifications work?
How do iOS "push" notifications get delivered to a particular device without that device needing to poll a server?
6 Answer...
How to make a display in a horizontal row
How can I make my list items appear horizontally in a row using CSS?
7 Answers
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When to use Common Table Expression (CTE)
I have begun reading about Common Table Expression and cannot think of a use case where I would need to use them. They would seem to be redundant as the same can be done with derived tables. Is there something I am missing or not understanding well? Can someone give me a simple example of limitati...
What is the meaning and difference between subject, user and principal?
In the context of security frameworks, a few terms commonly occur subject , user and principal , of which I have not been able to find a clear definition and the difference between them.
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Conditional Variable vs Semaphore
When should one use a semaphore and when should one use a conditional variable (CondVar) ?
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What does “dereferencing” a pointer mean?
Please include an example with the explanation.
6 Answers
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What is the advantage of using abstract classes instead of traits?
What is the advantage of using an abstract class instead of a trait (apart from performance)? It seems like abstract classes can be replaced by traits in most cases.
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What is a “static” function in C?
The question was about plain c functions, not c++ static methods, as clarified in comments.
12 Answers
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Getting attributes of a class
I want to get the attributes of a class, say:
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What's a monitor in Java?
What's a monitor referred to in concurrent programming in Java?
7 Answers
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