Cpp Standard Library 简明教程

category

properties

valid expressions

all categories

copy-constructible, copy-assignable and destructible

X b(a); b = a;

It can be incremented

a a

Random Access

Bidirectional

Forward

Input

It supports equality/inequality comparisons

a == b a != b

It can be dereferenced as an rvalue

*a a→m

Output

It can be dereferenced as an lvalue (only for mutable iterator types)

*a = t *a++ = t

default-constructible

X a; X()

Multi-pass: neither dereferencing nor incrementing affects dereferenceability

{ b = a; *a++; *b; }

It can be decremented

--a a-- *a--

It supports arithmetic operators + and -

a + n n + a a - n a - b

It supports inequality comparisons ( <, >, ⇐ and >=) between iterators

a < b a > b a ⇐ b a >= b

It supports compound assignment operations += and -=

a += n a -= n

It supports offset dereference operator ([])

a[n]

Sr.No.

Functions & Description

1

advanceIt advances the iterator it by n element positions.

2

distanceIt returns distance between iterators.

3

beginIt is used to begin an iterator.

4

endIt is used to end an iterator.

5

prev It is used to get iterator to previous element.

6

nextIt is used to get iterator to next element.

Sr.No.

Iterator generators & Description

1

back_inserterIt constructs back insert iterator.

2

inserterIt constructs insert iterator

3

make_move_iterator It construct move iterators.

Sr.No.

Classes & Description

1

iteratorIt iterators base class.

2

iterator_traitsIt is an iterator traits.

Sr.No.

Predefined iterators & Description

1

reverse_iteratorIt is a reverse iterator.

2

move_iteratorIt is a move iterator.

3

back_insert_iteratorIt is a back insert iterator.

4

front_insert_iteratorIt is a front insert iterator.

5

insert_iteratorIt is used to insert an iterator.

6

istream_iteratorIt is an input stream iterator.

7

ostream_iteratorIt is an output stream iterator.

8

istreambuf_iteratorIt is an input stream buffer iterator.

7

ostreambuf_iteratorIt is an output stream buffer iterator.

Sr.No.

Category tags & Description

1

input_iterator_tagInput iterator category.

2

output_iterator_tagoutput iterator category.

3

forward_iterator_tagForward iterator category.

4

bidirectional_iterator_tagBidirectional iterator category.

5

random_access_iterator_tagRandom-access iterator category.