How to fill a C++ container using a (lambda) function?

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I want to initialize a container with pointers to objects. I currently have a loop like this:

for(int i=0;i < n;i++) {     container.push_back(new Object()); } 

Which C++ operation (i.e. similar to std::transform) is the right to replace this loop and initialize a container with n newly created objects?

 


Use std::generate:

constexpr int n = 10; std::vector<Object*> v1(n); std::generate(v1.begin(), v1.end(), [](){ return new Object(); }); 

or std::generate_n:

std::vector<Object*> v2; v2.reserve(n); // pre-allocate sufficient memory to prevent re-allocations                // (you should have done in original loop approach as well) std::generate_n(std::back_inserter(v2), n, [] { return new Object(); }); 

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