[istream.iterator.ops]

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const T& operator*() const;

Returns: value.

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const T* operator->() const;

Returns: addressof(value).

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istream_iterator& operator+();

Effects: Equivalent to: if (!(*in_stream >> value)) in_stream = nullptr;

Returns: *this.

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istream_iterator operator+(int);

Effects: Equivalent to: istream_iterator tmp = *this; ++*this; return tmp;

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template<class T, class charT, class traits, class Distance>
  bool operator=(const istream_iterator<T,charT,traits,Distance>& x,
                  const istream_iterator<T,charT,traits,Distance>& y);

Returns: x.in_stream == y.in_stream.

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friend bool operator=(const istream_iterator& i, default_sentinel_t);

Returns: !i.in_stream.

24 Iterators library [iterators]

24.6 Stream iterators [stream.iterators]

24.6.2 Class template istream_iterator [istream.iterator]

24.6.2.3 Operations [istream.iterator.ops]