std::istream_iterator::operator*, operator->
From cppreference.com
< cpp | iterator | istream iterator
const T& operator*() const;
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const T* operator->() const;
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Returns a pointer or a reference to the current element.
The behavior is undefined if the iterator is end-of-stream iterator.
[edit] Parameters
(none)
[edit] Return value
A pointer or a reference to the current element.
[edit] Exceptions
(none)