std::ostream_iterator<T,CharT,Traits>::ostream_iterator
|
(1) | |
|
(2) |
Constructs the iterator with stream as the associated stream, by storing the address of stream.
1) Uses
delim as the delimiter.
2) Uses a null pointer as the delimiter.
Parameters
| stream | - | the output stream to be accessed by this iterator |
| delim | - | the null-terminated character string to be inserted into the stream after each output |
Example
#include <algorithm>
#include <iostream>
#include <iterator>
#include <numeric>
int main()
{
std::ostream_iterator<char> oo{std::cout};
std::ostream_iterator<int> i1{std::cout, ", "};
std::fill_n(i1, 5, -1);
*oo++ = '\n';
std::ostream_iterator<double> i2{std::cout, "; "};
*i2++ = 3.14;
*i2++ = 2.71;
*oo++ = '\n';
std::common_iterator<std::counted_iterator<std::ostream_iterator<float>>,
std::default_sentinel_t>
first{std::counted_iterator{std::ostream_iterator<float>{std::cout," ~ "}, 5}},
last{std::default_sentinel};
std::iota(first, last, 2.2);
*oo++ = '\n';
}Output:
-1, -1, -1, -1, -1,
3.14; 2.71;
2.2 ~ 3.2 ~ 4.2 ~ 5.2 ~ 6.2 ~Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 1280 | C++98 | stream was stored directly |
stores its address instead |
| P2325R3 | C++20 | default constructor was provided as C++20 iterators must be default_initializable |
removed along with the requirement |
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