��복��는 STL�� 는데�� 념��.
STL�� 는 ��복��는 4��. (iterator, const_iterator, reverse_iterator, const_reverse_iterator)
�� 는 �� 복��들�� , ��복��를 �� 는 방�� 룰 ��.

1. Item26. Prefer iterator to const_iterator, reverse_iterator, and const_reverst_iterator.

1.1. �� 복�� 미��는 ��
1.2. iterator를 ��는 ��
1.3. ��

2. Item27. Use distance and advance to convert a container's const_iterators to iterators.

2.1. ��
2.2. ��못�� 방��들
2.3. ��
2.4. ��

3. Item28. Understand how to use a reverse_iterator's base iterator

3.1. ��
3.2. ��

4. Item29. Consider istreambuf_iterators for character-by-characer input.

1. Item26. Prefer iterator to const_iterator, reverse_iterator, and const_reverst_iterator. ¶

1.1. �� 복�� 미��는 �� ¶

container<T>::iterator, reverse_iterator : T*
container<T>::const_iterator, const_reverse_iterator : const T*
reverse는 뒤��부�� . �� 부�� 뒤��

1.2. iterator를 ��는 �� ¶

대부�� 메��들�� iterator��.
��른 iterator��부�� iterator�� 변�� 능��.

1.3. �� ¶

��런 �� 면 ��냥 딴�� 말�� iterator ��는 ��.
내 �� 못�� 면, const_iterator는 말�� 는 �� .

2. Item27. Use distance and advance to convert a container's const_iterators to iterators. ¶

2.1. �� ¶

const_iterator는 �� 면 �� 말�� 만, �� .
�� 번 Item��는 const_iterator -> iterator�� 변��는 �� 명�� . ��대�� 는 �� 변�� 능��만, �� .
�� C++�� casting�� 무�� 미�� 말�� 는데.. ��는�� 르�� . ��런�� 는�� 대�� 부��러�� .
- ��문 : "When all else fails, get a bigger hammer."

2.2. ��못�� 방��들 ¶

~cpp 
// iterator��� const_iterator를 ������ Iter, CIter�� typedef���놓��������� ������.
CIter ci;
...
Iter i(ci);       // ��������. ������������ ���변������ ���립������ ���는���.
...
Iter i( const_cast<Iter>(ci) )       // ������ ��������. vector��� string������는 ������� 모르���만... ��루 ������������는 ���는��� ������.

�� 는 ��는 iterator�� const_iterator는 ��른 ��. �� 변�� 리�� .
string, vector�� 는 ��
- vector<T>::iterator는 T*�� typedef, vector<T>::const_iterator는 const T*�� typedef��. (�� .)
- string::iterator는 char*�� typedef, string::const_iterator는 const char*�� typedef��. 따�� const_cast<>�� . (�� .)
��만 reverse_iterator�� const_reverse_iterator는 typedef�� . const_cast<��>.

2.3. �� ¶

~cpp 
Iter i(d.begin());    // d는 ���떤 ��������������� ���������������.
advance(i, distance(i,ci));        // ��������� ���면 �����.... ������ ������는데 ����� ��� ����������� ���������--;

�� 냐면, distance�� 는 �� iterator��. const_iterator�� .

~cpp 
advance(i, distance<CIter>(i,ci));     // ��������� ���면 ������ �����.

2.4. �� ¶

��말 �� 명��는 �� . 모르�� 면 �� 들��, �� 들�� 내�� 말�� 더 ��린��는--;

3. Item28. Understand how to use a reverse_iterator's base iterator ¶

3.1. �� ¶

~cpp 
vector<int> v;   
...             // v��� ���례대�� 1~5������ ���������는���.

typedef vector<int>::reverse_iterator VIRI;
VIRI ri = find(v.rbegin(), v.rend(), 3);       // �������� ���������면��� 3��� ���는���.

typedef vector<int>::iterator VIIT;
VIIT i(ri.base());                             // ����������� 말������만 reverse ���리������ base()메�����를 ������������면 ���냥 ���리����� 바뀐 ��복���를 리������������.

rend()			ri		rbegin()
	1	2	3	4	5
	begin()			i		end()

�� 림�� 데..--; �� 복�� 르��는 ��를 ��낸 ��. 보면 ��만 ri�� base()를 ��는데�� 르��는�� .
��부�� 말��면, base()메�� 는 ��복��를 리��는�� . ��는 ��만, ��를 ��는 ��.
만�� ri�� 르��는 �� 를 �� . ��만 insert 메��는 reverse_iterator는 �� 받�� 는��. iterator��만 �� 받는��. �� 못��는 ��. �� 문�� . �� base()를 ��는 ��.
99를 i�� 르��는 �� 면(reverse��리��는 �� 못 ��는��.) �� .

�� 문�� 만.. 만�� erase()를 ��면? �� 3�� 데 base()�� iterator�� 면 4�� . ��떻�� 는��?
��

~cpp 
v.erase( (++ri).base() );    // ��. ���러면 ri는 2를 ���르������ ����� base() ��������� 리�����는 ��복���는 3��� ���르������. ������ ������면 �����.

3.2. �� ¶

��냥 iterator만 ��..--;

4. Item29. Consider istreambuf_iterators for character-by-characer input. ¶

EffectiveSTL

EffectiveSTL/Iterator

Contents

1. Item26. Prefer iterator to const_iterator, reverse_iterator, and const_reverst_iterator. ¶

1.1. �� 복�� 미��는 �� ¶

1.2. iterator를 ��는 �� ¶

1.3. �� ¶

2. Item27. Use distance and advance to convert a container's const_iterators to iterators. ¶

2.1. �� ¶

2.2. ��못�� 방��들 ¶

2.3. �� ¶

2.4. �� ¶

3. Item28. Understand how to use a reverse_iterator's base iterator ¶

3.1. �� ¶

3.2. �� ¶

4. Item29. Consider istreambuf_iterators for character-by-characer input. ¶

EffectiveSTL/Iterator

Contents

1. Item26. Prefer iterator to const_iterator, reverse_iterator, and const_reverst_iterator. ¶

1.1. ��������� ��복������ ���미���는 ��� ¶

1.2. iterator를 ���������는 ������ ¶

1.3. ����� ¶

2. Item27. Use distance and advance to convert a container's const_iterators to iterators. ¶

2.1. ����� ¶

2.2. ���못�� 방��들 ¶

2.3. ��������� ¶

2.4. ������ ¶

3. Item28. Understand how to use a reverse_iterator's base iterator ¶

3.1. ������ ¶

3.2. ������ ¶

4. Item29. Consider istreambuf_iterators for character-by-characer input. ¶

1.1. �� 복�� 미��는 �� ¶

1.2. iterator를 ��는 �� ¶

1.3. �� ¶

2.1. �� ¶

2.2. ��못�� 방��들 ¶

2.3. �� ¶

2.4. �� ¶

3.1. �� ¶

3.2. �� ¶