std::basic_osyncstream<CharT,Traits,Allocator>::get_wrapped

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Execution support library (C++26)

Technical specifications

Symbols index

External libraries

 

Input/output library

I/O manipulators

Print functions (C++23)

C-style I/O

Buffers

basic_streambuf

basic_filebuf

basic_stringbuf

basic_spanbuf (C++23)

strstreambuf (C++98/26*)

basic_syncbuf (C++20)

Streams

Abstractions

ios_base

basic_ios

basic_istream

basic_ostream

basic_iostream

File I/O

basic_ifstream

basic_ofstream

basic_fstream

String I/O

basic_istringstream

basic_ostringstream

basic_stringstream

Array I/O

basic_ispanstream (C++23)

basic_ospanstream (C++23)

basic_spanstream (C++23)

istrstream (C++98/26*)

ostrstream (C++98/26*)

strstream (C++98/26*)

Synchronized Output

basic_osyncstream (C++20)

Types

streamoff

streamsize

fpos

Error category interface

iostream_category (C++11)

io_errc (C++11)

 

std::basic_osyncstream

Public member functions

basic_osyncstream::basic_osyncstream (C++20)

basic_osyncstream::operator= (C++20)

basic_osyncstream::~basic_osyncstream (C++20)

basic_osyncstream::rdbuf (C++20)

basic_osyncstream::get_wrapped (C++20)

basic_osyncstream::emit (C++20)

 

streambuf_type* get_wrapped() const noexcept;

Returns a pointer to the wrapped std::basic_streambuf, obtained by calling get_wrapped() on the underlying std::basic_syncbuf.

Parameters

(none)

Example

Wrapped buffer can be safely wrapped again in a different synchronized output stream.

Run this code

#include <iostream>
#include <syncstream>
 
int main()
{
    std::osyncstream bout1(std::cout);
    bout1 << "Hello, ";
    {
        std::osyncstream(bout1.get_wrapped()) << "Goodbye, " << "Planet!" << '\n';
    } // emits the contents of the temporary buffer
    bout1 << "World!" << '\n';
} // emits the contents of bout1

Output:

Goodbye, Planet!
Hello, World!

See also

(destructor)	destroys the basic_osyncstream and emits its internal buffer (public member function)
get_wrapped	retrieves the wrapped streambuf pointer (public member function of std::basic_syncbuf<CharT,Traits,Allocator>)