Daniel Langr

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Daniel Langr has asked 64 questions and find answers to 166 problems.

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Daniel Langr questions

Can a file stream destructor throw an exception in C++?
When to provide custom swap function in C++?
Private operator delete triggers compile-time error with GCC and Clang but not with MSVC
Seemingly missing optimization for calling const-vector size() in loop condition
Computation is optimized only if variable updated in loop is local
What exactly is invalidation of reference/pointer?
Why is std::launder a constexpr function?
Error with for_each, map and lambda when passing by non-auto non-const lvalue reference
Overloads of std::isnan and std::isinf for integral types
OpenMP atomic and non-atomic reads/writes produce the same instructions on x86_64

Daniel Langr answers

c++ aggregate has incomplete type and cannot be defined with template class
Storing an std::assume_aligned pointer C++ 20
Why does cannonical implementation of overloading binary arithmatic operator in C++ pass first arguement by value?
Is it undefined behaviour to read a different member than was written in a Union?
In C++ can we dereference this pointer? If so then how and if not then why?
C++ template: cannot match the last template in variadic class template
Empty angle-brackets after a function's name in explicit specialization
Local Variables in a for loop openmp
Initializer list inside std::pair
Is it possible to allocate large amount of virtual memory in linux?