[/
Copyright 2019 Glen Joseph Fernandes
(glenjofe@gmail.com)

Distributed under the Boost Software License, Version 1.0.
(http://www.boost.org/LICENSE_1_0.txt)
]

[article ostream_string
[quickbook 1.5]
[authors [Fernandes, Glen]]
[copyright 2019 Glen Joseph Fernandes]
[license Distributed under the Boost Software License, Version 1.0.]]

[section Overview]

The header <boost/utility/ostream_string.hpp> provides the function template
`boost::ostream_string` for formatted output that satisfies the requirements of
\[ostream.formatted.reqmts\].

[endsect]

[section Examples]

The inserter for class template `basic_string_view` could be implemented as
follows:

```
template<class charT, class traits>
std::basic_ostream<charT, traits>&
operator<<(std::basic_ostream<charT, traits>& os,
    const basic_string_view<charT, traits>& str)
{
    return boost::ostream_string(os, str.data(), str.size());
}
```

[endsect]

[section Reference]

```
namespace boost {

template<class charT, class traits>
std::basic_ostream<charT, traits>&
ostream_string(std::basic_ostream<charT, traits>& os,
    const charT* data, std::size_t size);

} /* boost */
```

[heading Free functions]

[variablelist
[[`template<class charT, class traits> std::basic_ostream<charT, traits>&
ostream_string(std::basic_ostream<charT, traits>& os, const charT* data,
std::size_t size);`]
[[variablelist
[[Effects]
[Behaves like a formatted inserter (as described in
\[ostream.formatted.reqmts\]) of `os`. Creates a character sequence `seq` of
`size` characters starting at `data`, each widened using `os.widen()`
(\[basic.ios.members\]). Determines padding for `seq` as described in
\[ostream.formatted.reqmts\]. Inserts `seq` into `os`. Calls `width(0)`.]]
[[Returns][`os`.]]]]]]

[endsect]

[section History]

[heading boost 1.71]

* Glen Fernandes updated the implementation of the `basic_string_ref` and
`basic_string_view` stream insertion operators to write directly to the
`basic_streambuf` and refactored that functionality into this common utility.

[endsect]