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std::ostreambuf_iterator<CharT,Traits>::failed

From cppreference.com
 
 
Iterator library
Iterator concepts
Iterator primitives
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Stream iterators
Iterator customization points
Iterator operations
(C++11)
(C++11)
Range access
(C++11)(C++14)
(C++11)(C++14)
(C++17)(C++20)
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(C++17)
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bool failed() const throw();
(until C++11)
bool failed() const noexcept;
(since C++11)

Returns true if the iterator encountered the end-of-file condition, that is, if an earlier call to std::basic_streambuf::sputc (made by operator=) returned Traits::eof.

[edit] Parameters

(none)

[edit] Return value

true if this iterator has encountered the end-of-file condition on output, false otherwise.

[edit] Example