Defined in header <iterator> | ||
|---|---|---|
template< class CharT, class Traits = std::char_traits<CharT> >
class ostreambuf_iterator : public std::iterator<std::output_iterator_tag,
void, void, void, void>
| (until C++17) | |
template< class CharT, class Traits = std::char_traits<CharT> > class ostreambuf_iterator; | (since C++17) |
std::ostreambuf_iterator is a single-pass LegacyOutputIterator that writes successive characters into the std::basic_streambuf object for which it was constructed. The actual write operation is performed when the iterator (whether dereferenced or not) is assigned to. Incrementing the std::ostreambuf_iterator is a no-op.
In a typical implementation, the only data members of std::ostreambuf_iterator are a pointer to the associated std::basic_streambuf and a boolean flag indicating if the the end of file condition has been reached.
| Member type | Definition |
|---|---|
char_type | CharT |
traits_type | Traits |
streambuf_type | std::basic_streambuf<CharT, Traits> |
ostream_type | std::basic_ostream<CharT, Traits> |
constructs a new ostreambuf_iterator (public member function) |
|
| (destructor)
(implicitly declared) | destructs an ostreambuf_iterator (public member function) |
| writes a character to the associated output sequence (public member function) |
|
| no-op (public member function) |
|
| no-op (public member function) |
|
| tests if output failed (public member function) |
| Member type | Definition |
|---|---|
value_type | void |
difference_type | void |
pointer | void |
reference | void |
iterator_category | std::output_iterator_tag |
| These member types are required to be obtained by inheriting from | (until C++17) |
#include <string>
#include <algorithm>
#include <iterator>
#include <iostream>
int main()
{
std::string s = "This is an example\n";
std::copy(s.begin(), s.end(), std::ostreambuf_iterator<char>(std::cout));
}Output:
This is an example
input iterator that reads from std::basic_streambuf (class template) |
|
output iterator that writes to std::basic_ostream (class template) |
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