std::istreambuf_iterator<CharT,Traits>::istreambuf_iterator

Iterator library

indirectly_readable (C++20)
indirectly_writable (C++20)
weakly_incrementable (C++20)
incrementable (C++20)
is-integer-like is-signed-integer-like (C++20)(C++20)

sentinel_for (C++20)
sized_sentinel_for (C++20)
input_iterator (C++20)
output_iterator (C++20)
input_or_output_iterator (C++20)

forward_iterator (C++20)
bidirectional_iterator (C++20)
random_access_iterator (C++20)
contiguous_iterator (C++20)

Iterator primitives

input_iterator_tagoutput_iterator_tagforward_iterator_tagbidirectional_iterator_tagrandom_access_iterator_tagcontiguous_iterator_tag

(C++20)

iter_value_titer_difference_titer_reference_titer_const_reference_titer_rvalue_reference_titer_common_reference_t

(C++20) (C++20) (C++20) (C++23) (C++20) (C++20)

iterator (deprecated in C++17)
iterator_traits
incrementable_traits (C++20)
indirectly_readable_traits (C++20)

Algorithm concepts and utilities

Indirect callable concepts

indirectly_unary_invocableindirectly_regular_unary_invocable

(C++20)(C++20)

indirect_unary_predicate (C++20)
indirect_binary_predicate (C++20)

indirect_equivalence_relation (C++20)
indirect_strict_weak_order (C++20)

Common algorithm requirements

indirectly_movable (C++20)
indirectly_movable_storable (C++20)
indirectly_copyable (C++20)

indirectly_copyable_storable (C++20)
indirectly_swappable (C++20)
indirectly_comparable (C++20)

permutable (C++20)
mergeable (C++20)
sortable (C++20)

(C++20)

(C++20)

(C++26)

reverse_iterator
make_reverse_iterator (C++14)
move_iterator (C++11)
make_move_iterator (C++11)
default_sentinel_tdefault_sentinel (C++20)(C++20)
unreachable_sentinel_tunreachable_sentinel (C++20)(C++20)

front_insert_iterator
back_insert_iterator
inserter
insert_iterator
front_inserter
back_inserter
move_sentinel (C++20)

common_iterator (C++20)
counted_iterator (C++20)
basic_const_iterator (C++23)
const_iterator (C++23)
const_sentinel (C++23)
make_const_iterator (C++23)
make_const_sentinel (C++23)

Stream iterators

istream_iterator
ostream_iterator

istreambuf_iterator
ostreambuf_iterator

Iterator customization points
ranges::iter_move (C++20)
ranges::iter_swap (C++20)

Iterator operations

advance
distance
prev (C++11)
next (C++11)

ranges::advance (C++20)
ranges::distance (C++20)
ranges::prev (C++20)
ranges::next (C++20)

Range access

begincbegin (C++11)(C++14)
rbegincrbegin (C++14)(C++14)

endcend (C++11)(C++14)
rendcrend (C++14)(C++14)

sizessize (C++17)(C++20)
empty (C++17)
data (C++17)

	(1)
istreambuf_iterator() throw();			(until C++11)
constexpr istreambuf_iterator() noexcept;			(since C++11)
constexpr istreambuf_iterator( std::default_sentinel_t ) noexcept ;		(2)	(since C++20)
		(3)
istreambuf_iterator( std::basic_istream <CharT,Traits> & is ) throw ( ) ;				(until C++11)
istreambuf_iterator( std::basic_istream <CharT,Traits> & is ) noexcept ;				(since C++11)
			(4)
istreambuf_iterator( std::basic_streambuf <CharT,Traits> * s ) throw ( ) ;					(until C++11)
istreambuf_iterator( std::basic_streambuf <CharT,Traits> * s ) noexcept ;					(since C++11)
				(5)
istreambuf_iterator( const /* proxy */ & p ) throw ( ) ;						(until C++11)
istreambuf_iterator( const /* proxy */ & p ) noexcept ;						(since C++11)
istreambuf_iterator( const istreambuf_iterator& ) noexcept = default ;					(6)	(since C++11)

1,2) Constructs an end-of-stream iterator.

3) Initializes the iterator and stores the value of is.rdbuf() in a data member. If is.rdbuf()

4) Initializes the iterator and stores the value of s in a data member. If s

5) Effectively call (3) with the streambuf_type* pointer p holds.

6) The copy constructor is trivial and explicitly defaulted.

The copy constructor is effectively implicitly declared and not guaranteed to be trivial.

(until C++11)

Parameters

is	-	stream to obtain the stream buffer from
s	-	stream buffer to initialize the iterator with
p	-	object of the implementation-defined proxy type

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Diagnostics library
Memory management library
Metaprogramming library (C++11)
General utilities library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library (C++17)
Concurrency support library (C++11)
Execution support library (C++26)
Technical specifications
Symbols index
External libraries

Member functions
istreambuf_iterator::istreambuf_iterator
istreambuf_iterator::operator*
istreambuf_iterator::operator++istreambuf_iterator::operator++(int)
istreambuf_iterator::equal
Non-member functions
operator==operator!= (until C++20)

std::istreambuf_iterator<CharT,Traits>::istreambuf_iterator

Parameters

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