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What is the purpose of the “final” keyword in C++11 for functions?
...s is that for any such virtual object (assuming 64-bits on a typical Intel CPU) the pointer alone eats up 25% (8 of 64 bytes) of a cache line. In the kind of applications I enjoy to write, this hurts very badly. (And from my experience it is the #1 argument against C++ from a purist performance poin...
What is the direction of stack growth in most modern systems?
... from my big honkin' System z at work to a puny little wristwatch.
If the CPU provides any kind of choice, the ABI / calling convention used by the OS specifies which choice you need to make if you want your code to call everyone else's code.
The processors and their direction are:
x86: down.
SP...
LINQ To Entities does not recognize the method Last. Really?
...u pointed out, it could bring back thousands of records and waste loads of CPU materialising objects that will never get used)
Again, I would not recommend doing this second, but it does help illustrate the difference between where and when the LINQ expression is executed.
...
How do you implement a Stack and a Queue in JavaScript?
...have a really good reason for it... while it might seem logically correct, CPUs don't operate according to human abstractions. Iterating over a datastructure that has pointers all over the place will result in cache misses in the CPU, unlike a sequential array which is highly efficient. blog.davidec...
What is difference between sjlj vs dwarf vs seh?
...looking for? Browse other questions tagged c++ compiler-construction mingw cpu-architecture mingw-w64 or ask your own question.
How can I generate a unique ID in Python? [duplicate]
...dom library :)
1 million id per second ?... on a Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz, you get :
>>> timeit.timeit(uniqueid,number=40000)
1.0114529132843018
an average of 40000 id/second
"""
mynow=datetime.now
sft=datetime.strftime
# store old dat...
Time complexity of Euclid's Algorithm
...rations is linear in the number of input digits. For numbers that fit into cpu registers, it's reasonable to model the iterations as taking constant time and pretend that the total running time of the gcd is linear.
Of course, if you're dealing with big integers, you must account for the fact that ...
Is “double hashing” a password less secure than just hashing it once?
...on the server if you had a large user base, because you are relying on the CPU load to slow down the number of requests. It means that if you add more CPU power, you are reducing the restriction on those brute force attackers. -- However, you are completely correct about the scalability, and the wid...
If threads share the same PID, how can they be identified?
...apart from the tgid), a multi-threaded process will in conclusion get more CPU time than a single-threaded one, provided that both have the same priority and none of the threads is halted for any reason (such as waiting for a mutex).
– Aconcagua
Sep 21 '15 at 1...
What is an SDL renderer?
...ther important difference is that SDL_Surface uses software rendering (via CPU) while SDL_Texture uses hardware rendering (via GPU).
SDL_Rect
The simplest struct in SDL. It contains only four shorts. x, y which holds the position and w, h which holds width and height.
It's important to note th...
