Depends on the language. In C++ const std::vector<int>& foo = bar.GetVector(); foo is a constant object reference cannot have its properties changed (and al

Depends on the language. In C++ const std::vector<int>& foo = bar.GetVector(); foo is a constant object reference cannot have its properties changed (and also cannot be changed to refer to a new object). std::vector<int>& foo = bar.GetVector(); Is an object reference that can have its properties changed (but cannot be changed to refer to a new object).