C++ possible to use move sematics to move data from one vector to another

Question

The code below copies data from one vector into another. If the vectors are large then I guess this is expensive. Is it possible to use move semantics here to copy data from one vector into another? std::vector newData(Shape.Size(), 0); std::vector oldData = a->getData(); std::copy(oldData.begin(), oldData.end(), newData.begin()); JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

You could use the algorithm std::move instead of std::copy: std::move(oldData.begin(), oldData.end(), newData.begin()); It will still transfer elements by elements, but will move them instead. Don't forget to pre-allocate the vector with the right size to avoid moving elements around too much.