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How to convert string to char array in C++?
... he created is the same thing as a char array. An array variable in C and C++ is just a pointer to the first element in the array.
– JustinCB
Jun 1 '17 at 17:39
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Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
It is loosely related to this question: Are std::thread pooled in C++11? . Though the question differs, the intention is the same:
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std::auto_ptr to std::unique_ptr
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Scott Meyers also mentioned in his "Effective C++" (3rd Edition) Item 13 (page 64) that STL containers require that their contents exhibit "normal" copying behavior, so containers of auto_ptr aren't allowed.
– Qiang Xu
Oct 29 '12 at...
Error: Jump to case label
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C++11 standard on jumping over some initializations
JohannesD gave an explanation, now for the standards.
The C++11 N3337 standard draft 6.7 "Declaration statement" says:
3 It is possible to transfer into a block, but n...
What exactly does stringstream do?
I am trying to learn C++ since yesterday and I am using this document: http://www.cplusplus.com/files/tutorial.pdf (page 32) . I found a code in the document and I ran it. I tried inputting Rs 5.5 for price and an integer for quantity and the output was 0.
I tried inputting 5.5 and 6 and the output...
How to return smart pointers (shared_ptr), by reference or by value?
...uire something */);
};
This is a dead-obvious RVO opportunity for modern C++ compilers. I know for a fact that Visual C++ compilers implement RVO even when all optimizations are turned off. And with C++11's move semantics, this concern is even less relevant. (But the only way to be sure is to prof...
Default constructor with empty brackets
... brackets (parentheses) isn't valid for calling the default constructor in C++?
9 Answers
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Smooth GPS data
...d approach and works well. There is a KFilter library available which is a C++ implementation.
My next fallback would be least squares fit. A Kalman filter will smooth the data taking velocities into account, whereas a least squares fit approach will just use positional information. Still, it is d...
Nodejs Event Loop
...e node.js is that v8 loop runs and handles all javascript parts as well as C++ modules [ when they are running in a main thread ( as per official documentation node.js itself is single threaded) ]. When outside of the main thread, libev and libeio handle it in the thread pool and libev provide the i...
How do I convert between big-endian and little-endian values in C++?
How do I convert between big-endian and little-endian values in C++?
31 Answers
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