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What are MVP and MVC and what is the difference?
...ilding user interfaces that many tools encourage you are likely to come across three design patterns called Model-View-Controller , Model-View-Presenter and Model-View-ViewModel . My question has three parts to it:
...
Is it better to use std::memcpy() or std::copy() in terms to performance?
...o go against the general wisdom here that std::copy will have a slight, almost imperceptible performance loss. I just did a test and found that to be untrue: I did notice a performance difference. However, the winner was std::copy.
I wrote a C++ SHA-2 implementation. In my test, I hash 5 strings us...
What is the meaning of the term arena in relation to memory?
...nd don't need to worry about tracking individual deallocations.
Each of those techniques is very specialized and generally only comes in handy if you know exactly what you're doing and why the normal library allocation is not good enough. Note that a good memory allocator will already do lots of ma...
Why aren't variable-length arrays part of the C++ standard?
...ry much in the last few years. When I read this question today I came across some C syntax which I wasn't familiar with.
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javac is not recognized as an internal or external command, operable program or batch file [closed]
...H. Remove old Java paths.
Add the new Java path to PATH.
Edit JAVA_HOME.
Close and re-open console/IDE.
Welcome!
You have encountered one of the most notorious technical issues facing Java beginners: the 'xyz' is not recognized as an internal or external command... error message.
In a nutshell...
Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V
...
@marcog - your notation is at least confusing and at most wrong. n is the keystrokes you're allowed to use. You have to compute how many As you can type with n keystrokes. So 7 => 7 makes no sense.
– IVlad
Jan 5 '11 at 18:51
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Constant Amortized Time
...e last enlarge. But you've also waited twice as long before doing it! The cost of each enlargement can thus be "spread out" among the insertions. This means that in the long term, the total time taken for adding m items to the array is O(m), and so the amortised time (i.e. time per insertion) is O(1...
How do exceptions work (behind the scenes) in c++
...viously a lot of overhead in actually throwing and catching an exception. Most of it is hidden within __cxa_throw, which must:
Walk the stack with the help of the exception tables until it finds a handler for that exception.
Unwind the stack until it gets to that handler.
Actually call the handler...
Using ThreadPool.QueueUserWorkItem in ASP.NET in a high traffic scenario
...nd tasks was considered best practice, even in ASP.NET, but then I came across this article that seems to suggest otherwise - the argument being that you should leave the ThreadPool to deal with ASP.NET related requests.
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How do I daemonize an arbitrary script in unix?
...rmally) fatal signals that should be handled.
– Tim Post♦
Mar 15 '10 at 12:17
Another way to improve this script is ...