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

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< cpp‎ | iterator‎ | istreambuf iterator

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

1) Constructs an end-of-stream iterator.
2) 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.
3) Initializes the iterator and stores the value of `s` in a data member. If `s` is null, then end-of-stream iterator is constructed.
4) Effectively call (3) with the `streambuf_type*` pointer `p` holds.
5) The copy constructor is explicitly defaulted.

### Parameters

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

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