真在学习c++模板，在看轮子哥的cpplinq时的疑问

Question

在这里，后面的成员函数都没有用到values,为什么不能删掉？

Answer 1

Cannot be deleted.

This is related to the mechanism of std::shared_ptr. Here, values ​​stores a reference to a vector, which will be released after storage_iterator destruction. Saving this reference ensures that as long as storage_iterator survives, the reference objects (values) bound to the iterator will also survive.

Answer 2

Do you want to delete the initialization of values ​​in the constructor or delete the entire values ​​member?

Answer 3

..........After deleting it, what do you use this class for?