- Qt 6.9
- Qt Core
- C++ Classes
- const_iterator
- Qt 6.9.3 Reference Documentation

# Obsolete Members for QMultiMap::const_iterator

The following members of class const_iterator are deprecated. They are provided to keep old source code working. We strongly advise against using them in new code.

## Public Functions

`(deprecated in 6.2)` QMultiMap<Key, T>::const_iterator & | operator+=(QMultiMap<Key, T>::const_iterator::difference_type n)
`(deprecated in 6.2)` QMultiMap<Key, T>::const_iterator & | operator-=(QMultiMap<Key, T>::const_iterator::difference_type n)

## Related Non-Members

`(deprecated in 6.2)` QMultiMap<Key, T>::const_iterator | operator+(QMultiMap<Key, T>::const_iterator it, QMultiMap<Key, T>::const_iterator::difference_type j)
`(deprecated in 6.2)` QMultiMap<Key, T>::const_iterator | operator+(QMultiMap<Key, T>::const_iterator::difference_type j, QMultiMap<Key, T>::const_iterator it)
`(deprecated in 6.2)` QMultiMap<Key, T>::const_iterator | operator-(QMultiMap<Key, T>::const_iterator it, QMultiMap<Key, T>::const_iterator::difference_type j)
`(deprecated in 6.2)` QMultiMap<Key, T>::const_iterator | operator-(QMultiMap<Key, T>::const_iterator::difference_type j, QMultiMap<Key, T>::const_iterator it)

## Member Function Documentation

### `[deprecated in 6.2]` QMultiMap<Key, T>::const_iterator &const_iterator::operator+=(QMultiMap<Key, T>::const_iterator::difference_type n)

### `[deprecated in 6.2]` QMultiMap<Key, T>::const_iterator &const_iterator::operator-=(QMultiMap<Key, T>::const_iterator::difference_type n)

### `[deprecated in 6.2]` QMultiMap<Key, T>::const_iterator operator+(QMultiMap<Key, T>::const_iterator it, QMultiMap<Key, T>::const_iterator::difference_type j)

### `[deprecated in 6.2]` QMultiMap<Key, T>::const_iterator operator+(QMultiMap<Key, T>::const_iterator::difference_type j, QMultiMap<Key, T>::const_iterator it)

### `[deprecated in 6.2]` QMultiMap<Key, T>::const_iterator operator-(QMultiMap<Key, T>::const_iterator it, QMultiMap<Key, T>::const_iterator::difference_type j)

### `[deprecated in 6.2]` QMultiMap<Key, T>::const_iterator operator-(QMultiMap<Key, T>::const_iterator::difference_type j, QMultiMap<Key, T>::const_iterator it)

This function is deprecated since 6.2. We strongly advise against using it in new code.

Use `std::next`, `std::prev` or `std::advance` instead.

Move an iterator by n positions. These operations can be expensive for large values of n. QMultiMap iterators are not random access.