operator--
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## operator--

### Function Details

    self& operator--()

Post-decrement.

#### Return Value

This iterator after decremented.

#### See Also

db_map_base_iterator::operator--()

    self operator--(int)

Pre-decrement.

#### Return Value

Another iterator having the old value of this iterator.

#### See Also

db_map_base_iterator::operator--(int)

### Group: Iterator movement operators.

These functions are identical to those of db_map_base_iterator and db_map_iterator and db_set_iterator .

Actually the iterator movement functions in the four classes are the same.

### Class

db_set_base_iterator

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