Let me give a concrete example to make it more clear what I exactly mean.I have two drafts of C++ standard: N4296 that is quite old now and more recent revision N4750. There are some subsections that I am interested in, e.g. [unord.hash]. Version N4296 requires from std::hash to provide...
trying to find an info on what happens if an empty vector used during std::find but didn't had much luck finding any info.
I'm working on different memory block manipulation functions and during benchmarks I noticed, that my implementation of the IsEqualRange(double* begin1, double* end1, double* begin2, double* end2) is much faster then the std::equals(...) on MSVC and GCC as well. Further investigation showed, that doubles and floats are not block compared by...
This question already has an answer here:I'm learning C++ and apparently a way of checking if a particular key exists in a std::map is using the member function count.
I need to run reproducible Monte Carlo runs. That means I use a known seed that I store with my results, and use that seed if I need to run the same problem instance using the same random numbers. This is common practice.
Why running std::abs over a big complex array is about 8 times slower than using sqrt and norm?I believe the two are not to be taken as identical in the strict sense.
I'm trying to find the largest value in a std::map, which would be the last node in the tree (since std::map keys are sorted).
I have a question, please go through the following simple C++ program,Output:How does sptr1 and sptr3 objects know reference count is incremented as it prints 4.
C++14 final working draft makes the following comment about std::vector:Storage management is handled automatically, though hints can be given to improve efficiency.
Quote from cppreference.com:Adding template specializationsIt is allowed to add template specializations for any standard library |class (since C++20)| template to the namespace std only if the declaration depends on at least one program-defined type and the specialization satisfies all requirements for the original template, except where such specializations are prohibited.