std::ostreambuf_iterator::failed
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                    < cpp | iterator | ostreambuf iterator
                    
                                                            
                    | bool failed() const; | ||
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.
Parameters
(none)
Return value
true if this iterator has encountered the end-of-file condition on output, false otherwise.
Exceptions
| (none) | (until C++11) | 
| noexcept specification:   noexcept | (since C++11) | 
Example
| This section is incomplete Reason: no example |