1) 正向迭代器定义方法:容器类名::iterator 迭代器名; 2) 常量正向迭代器定义方法:容器类名::const_iterator 迭代器名; 3) 反向迭代器,定义方法如下:容器类名::reverse_iterator 迭代器名; 4) 常量反向迭代器,定义方法如下:容器类名::const_reverse_iterator 迭代器名; 下面就用vector容器来进行举例。 vect...
const_iterator end()const{return&objects[size()]; }staticconstintspare_capacity =16;private:intthesize;intthecapacity;object*objects; };
set<int> demo{1, 2}; // 如果参数为const vector<int> 需要用const_iterator // vector<int>::const_iterator iter=v.begin(); set<int> s = demo; set<int>::iterator iter; for (iter = s.begin(); iter != s.end(); ++iter) { cout << *iter << " "; } } 删除元素 /* * 删...
Iterator(int x) : x_(x) {} int operator*() const { return x_; } Iterator& operator++() { ++x_; return *this; } bool operator==(const Iterator& other) const { return x_ == other.x_; } bool operator!=(const Iterator& other) const { return !...
/*maybe-const*/ 的定义见 maybe-const 。 重载数据成员 parent_ it_ (1) 以nullptr 初始化 默认初始化 (2) 以it.parent_ 初始化 以base-iter (std::in_place_index<I>, std::get<I>(std::move(it.it_ ))) 初始化 (where I is it.it_ .index()) ...
/** 直接用迭代器,注意const_iterator还是iterator* */void search2() {vector<int> demo{1, 2};// 如果参数为const vector<int> 需要用const_iterator// vector<int>::const_iterator iter=v.begin();for (vector<int>::iterator it = demo.begin(); it != demo.end(); ++it) {cout << (*it...
std::basic_const_iterator From cppreference.com <cpp |iterator Iterator concepts indirectly_readable (C++20) indirectly_writable (C++20) weakly_incrementable (C++20) incrementable (C++20) input_or_output_iterator (C++20) sentinel_for
/// Positions the iterator at the next node in the Timer Queue virtual void next (void) = 0; /// Returns true when there are no more nodes in the sequence virtual bool isdone (void) const = 0; /// Returns the node at the current position in the sequence ...
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void _M_erase_aux(const_iterator __position) { _Link_type __y = static_cast<_Link_type>(_Rb_tree_rebalance_for_erase (const_cast<_Base_ptr>(__position._M_node), this->_M_impl._M_header)); _M_drop_node(__y); --_M_impl._M_node_count; ...