std::basic_stringbuf<CharT,Traits,Allocator>::operator=

 

C++

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Feature test macros(C++20)

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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)

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ios_base

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basic_stringstream

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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_stringbuf

Public member functions

basic_stringbuf::basic_stringbuf

basic_stringbuf::operator= (C++11)

basic_stringbuf::swap (C++11)

basic_stringbuf::str

basic_stringbuf::get_allocator (C++20)

basic_stringbuf::view (C++20)

Protected member functions

basic_stringbuf::underflow

basic_stringbuf::pbackfail

basic_stringbuf::overflow

basic_stringbuf::setbuf

basic_stringbuf::seekoff

basic_stringbuf::seekpos

Non-member functions

swap(std::basic_stringbuf) (C++11)

Exposition-only member functions

basic_stringbuf::init_buf_ptrs

 

std::basic_stringbuf& operator=(std::basic_stringbuf&& rhs );	(1)	(since C++11)
std::basic_stringbuf& operator=(conststd::basic_stringbuf& rhs )= delete;	(2)

1) Move assignment operator: Moves the contents of rhs into *this. After the move, *this has the associated string, the open mode, the locale, and all other state formerly held by rhs. The six pointers of std::basic_streambuf in *this are guaranteed to be different from the corresponding pointers in the moved-from rhs unless null.

2) The copy assignment operator is deleted; basic_stringbuf is not CopyAssignable.

Parameters

rhs

-

another basic_stringbuf that will be moved from

Return value

*this

Example

Run this code

#include <iostream>#include <sstream>#include <string>   int main(){std::istringstream one("one");std::ostringstream two("two");   std::cout<<"Before move, one = \""<< one.str()<<'"'<<" two = \""<< two.str()<<"\"\n";   *one.rdbuf()= std::move(*two.rdbuf());   std::cout<<"After move, one = \""<< one.str()<<'"'<<" two = \""<< two.str()<<"\"\n";}

Output:

Before move, one = "one" two = "two" After move, one = "two" two = ""

See also

(constructor)

constructs a basic_stringbuf object (public member function)