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What is the meaning of “non temporal” memory accesses in x86
... not (immediately) consumed again, the fact that memory store operations read a full cache line first and then modify the cached data is detrimental to performance. This operation pushes data out of the caches which might be needed again in favor of data which will not be used soon. This is especial...
How to create GUID / UUID?
...ot be the accepted answer. It does not actually answer the question - instead encouraging the import of 25,000 lines of code for something you can do with one line of code in any modern browser.
– Abhi Beckert
Jul 8 at 0:36
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Redis strings vs Redis hashes to represent JSON: efficiency?
I want to store a JSON payload into redis. There's really 2 ways I can do this:
3 Answers
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Asserting successive calls to a mock method
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Rohitashwa Nigam
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answered Jun 5 '14 at 15:05
PigueirasPigueiras
16.8k99...
How can I create a copy of an object in Python?
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Sven MarnachSven Marnach
446k100100 gold badges833833 silver badges753753 bronze badges
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What's the difference between deadlock and livelock?
...y please explain with examples (of code) what is the difference between deadlock and livelock ?
7 Answers
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Javascript object Vs JSON
...ver, you can't send a chest-of-drawers in the post, so you dismantle it (read, stringify it). It's now useless in terms of furniture. It is now JSON. Its in flat pack form.
{"color":"red","numberOfDrawers":4}
When you receive it, you then rebuild the chest-of-drawers (read, parse it). Its now bac...
Git submodule update
...f the project, but not within a branch. This is called having a detached head — it means the HEAD file points directly to a commit, not to a symbolic reference.
The issue is that you generally don’t want to work in a detached head environment, because it’s easy to lose changes.
If you do a...
What's the fundamental difference between MFC and ATL?
... 90s to try out this new language called C++ and apply it to Windows. It made Office like features available to the development community when the OS didn't have them yet.
[Edit embellishment: I did not work at Microsoft, so I don't know if Office was ever built on MFC, but I think the answer is ...
What are copy elision and return value optimization?
...a:
struct C {
C() {}
C(const C&) { std::cout << "A copy was made.\n"; }
};
C f() {
return C();
}
int main() {
std::cout << "Hello World!\n";
C obj = f();
}
Depending on the compiler & settings, the following outputs are all valid:
Hello World!
A copy was made.
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