How Can I Use Reverse Iterators to Erase Elements from a List in C ?

Erasing Elements with Reverse Iterators

In the realm of iterators, the erase function demands an iterator, leaving you in a bind when working with reverse iterators. How can you overcome this challenge and remove elements from a list using reverse iterators?

According to the C standard, the base of a reverse iterator, i.base(), corresponds to the element preceding the one pointed to by the reverse iterator, i.e., &*(reverse_iterator(i)) == &*(i - 1).

Therefore, to remove an element using a reverse iterator, you need to adjust the offset of the base iterator. This can be achieved using the following solution:

m_CursorStack.erase(--(i.base()));

Alternatively, C 11 offers two additional options:

1. Unchanged Reverse Iterator:

m_CursorStack.erase(std::next(i).base());

2. Advanced Reverse Iterator:

std::advance(i, 1);
m_CursorStack.erase(i.base());

Choose the solution that best suits your requirements, enabling you to effortlessly erase elements from a list while leveraging the convenience of reverse iterators.

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