namespace std {
template <class charT, class traits = char_traits<charT>>
class ostreambuf_iterator {
public:
using iterator_category = output_iterator_tag;
using value_type = void;
using difference_type = void;
using pointer = void;
using reference = void;
using char_type = charT;
using traits_type = traits;
using streambuf_type = basic_streambuf<charT,traits>;
using ostream_type = basic_ostream<charT,traits>;
ostreambuf_iterator(ostream_type& s) noexcept;
ostreambuf_iterator(streambuf_type* s) noexcept;
ostreambuf_iterator& operator=(charT c);
ostreambuf_iterator& operator*();
ostreambuf_iterator& operator++();
ostreambuf_iterator& operator++(int);
bool failed() const noexcept;
private:
streambuf_type* sbuf_; };
}
The class template ostreambuf_iterator writes successive characters onto the output stream from which it was constructed. It is not possible to get a character value out of the output iterator.
27.6.4.1 ostreambuf_iterator constructors [ostreambuf.iter.cons]ostreambuf_iterator(ostream_type& s) noexcept;
Requires: s.rdbuf() shall not be a null pointer.
Effects: Initializes sbuf_ with s.rdbuf().
ostreambuf_iterator(streambuf_type* s) noexcept;
Requires: s shall not be a null pointer.
Effects: Initializes sbuf_ with s.
27.6.4.2 ostreambuf_iterator operations [ostreambuf.iter.ops]ostreambuf_iterator& operator=(charT c);
Effects: If failed() yields false, calls sbuf_->sputc(c); otherwise has no effect.
ostreambuf_iterator& operator*();
ostreambuf_iterator& operator++(); ostreambuf_iterator& operator++(int);
bool failed() const noexcept;
Returns: true if in any prior use of member operator=, the call to sbuf_->sputc() returned traits::eof(); or false otherwise.
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