Is it guaranteed by the C++ standard that if I have two pointers of the same type whose value is equal to nullptr, that the difference between those pointers is
Is it guaranteed by the C++ standard that if I have two pointers of the same type whose value is equal to nullptr, that the difference between those pointers is
I'm working with Visual Studio 2013. When I need to know what types the compiler deduced for my template parameters, I usually trigger a compiler error like thi
I'm getting error SPIGtestMain.cpp:"MockObj not declared in this scope" though I've declared it globally in with extern keyword in SPIGtestMain.cpp file. SPIG
I'm getting error SPIGtestMain.cpp:"MockObj not declared in this scope" though I've declared it globally in with extern keyword in SPIGtestMain.cpp file. SPIG
I want to convert a vector<bool> vec = {true, false,true} to json object using nlohman json lib to send through restapi. I expect the converted json objec
I want my class use another implementation for types don't have constexpr constructor. like this: template <typename A> class foo { public: // if A h
The code below compiles except for the lines template <> std::map<std::string, std::function<Goo*(Foo*)>>& Factory::getMap<Goo, Foo*>
Given a number n Find the count of the sub numbers of size x in a number num which divides num. For example, if the number is 250 and x=2 the answer will be 2 a
Currently, I am trying to solve the following situation. I have a classB which contains some objects from a classA. Each classA has a function foo which needs t
The comparison in the assignment operator works as expected, but when I try to use a temp variable and load then return that, all it returns is the defaults. De
The C++11 Standard (ISO/IEC 14882:2011) says in § C.1.1: char* p = "abc"; // valid in C, invalid in C++ For the C++ it's OK as a pointer to a String Lit
following is my code. Eigen::Matrix3d first_rotation = firstPoint.q.matrix(); Eigen::Vector3d first_trans= firstPoint.t; for(auto &iter:in_point
C++11 mandates that static variables inside a function are atomically initialized for the first run of the function. The only way to do that efficiently is doub
SPIGtestMain.cpp #include "gtest/gtest.h" #include "gmock/gmock.h" TEST_F(GivenANewSPI,WhenDemoIsCalled_TheComponentGetsVal) { unsigned char const *Ptr;
I think the 8th constructor of the std::shared_ptr<T> should be decalared as template< class T, class Y > shared_ptr<T>( const shared_ptr<Y
I want to transfer json data into request of json boost in cpp. If i take json in boost int outer=2; value data = { {"dia",outer}, {"sleep_tim
I am trying to initialise an std::vector<std::unique_ptr<std::string>> in a way that is equivalent to an example from Bjarne Stroustrup's C++11 FAQ:
Brace initialization struct A { int a; int b; void foo(){} }; A a{1, 2}; It works fine. Bu
for example: if the user enters : ( 23+22+43) I want the function to do exactly the following : for(int i =0; i <strlen(x);i ++) { if (x[i]=='+') {