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

 

C++

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)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Technical specifications

Symbols index

External libraries

 

Iterator library

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 (C++20) sized_sentinel_for (C++20)	input_iterator (C++20) output_iterator (C++20) forward_iterator (C++20) bidirectional_iterator (C++20) random_access_iterator (C++20) contiguous_iterator (C++20)
Iterator primitives
iterator_traits input_iterator_tagoutput_iterator_tagforward_iterator_tagbidirectional_iterator_tagrandom_access_iterator_tagcontiguous_iterator_tag (C++20) iterator (deprecated in C++17)	incrementable_traits (C++20) indirectly_readable_traits (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)
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)
Utilities
indirect_result_t (C++20)	projected (C++20)
Iterator adaptors
reverse_iterator move_iterator (C++11) 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) back_insert_iterator front_insert_iterator insert_iterator	make_reverse_iterator (C++14) make_move_iterator (C++11) default_sentinel_tdefault_sentinel (C++20)(C++20) unreachable_sentinel_tunreachable_sentinel (C++20)(C++20) make_const_iterator (C++23) make_const_sentinel (C++23) back_inserter front_inserter inserter
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) endcend (C++11)(C++14) sizessize (C++17)(C++20)	rbegincrbegin (C++14)(C++14) rendcrend (C++14)(C++14) empty (C++17) data (C++17)

 

std::istreambuf_iterator

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)

 

	(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() is null, then end-of-stream iterator is constructed.

4) Initializes the iterator and stores the value of s in a data member. If s is null, then end-of-stream iterator is constructed.

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