Update each value in a std::list with a foreach loop C++

Question

I\'ve got a std::list in C++ and I\'m trying to use a for(Type t : list) operation to update the value of each object. So I have a list called balls a

Answer 1

You're taking a copy of original object, use a reference

for(OpenGLView::AssetInstance& ball : balls)
            ball.position = calculateBallPosition(ball);

Or Simply

for( auto& ball : balls)
            ball.position = calculateBallPosition(ball);