public member function
<iterator>
| (1) | move_iterator& operator--(); |
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| (2) | move_iterator operator--(int); |
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Decrement iterator position
Decreases the iterator by one position.
Internally, the pre-decrement version (1) simply reflects the operation into its base iterator.
The post-decrement version (2) is implemented with a behavior equivalent to
1
2
3
4
5
|
move_iterator operator--(int) {
move_iterator temp = *this;
--(*this);
return temp;
}
|
Note that this function requires the base iterator to be at least a bidirectional iterator.
参数
none (the second version overloads the post-decrement operator).
返回值
The pre-decrement version (1) returns *this.
The post-decrement version (2) returns the value *this had before the call.
数据竞争
修改对象。
返回的迭代器可用于访问或修改指向的元素。
异常安全
Provides the same level of guarantee as decreasing (and copying, for (2)) the base iterator.