std::basic_filebuf::operator=
From cppreference.com
< cpp | io | basic filebuf
| std::basic_filebuf& operator=( std::basic_filebuf&& rhs ); |
(since C++11) | |
| std::basic_filebuf& operator=( const std::basic_filebuf& rhs ) = delete; |
||
1) First calls close() to close the associated file, then moves the contents of rhs into *this: the put and get buffers, the associated file, the locale, the openmode, the is_open flag, and any other state. After the move, rhs is not associated with a file and rhs.is_open() == false.
2) The copy assignment operator is deleted; basic_filebuf is not CopyAssignable.
Contents |
[edit] Parameters
| rhs | - | another basic_filebuf that will be moved from |
[edit] Return value
*this
[edit] Example
#include <fstream> #include <string> #include <iostream> int main() { std::ifstream fin("test.in"); // read-only std::ofstream fout("test.out"); // write-only std::string s; getline(fin, s); std::cout << s << '\n'; // output *fin.rdbuf() = std::move(*fout.rdbuf()); getline(fin, s); std::cout << s << '\n'; // empty line std::cout << std::boolalpha << fout.is_open() << '\n'; // prints "false" }
[edit] See also
| constructs a basic_filebuf object (public member function) | |
| (C++11) |
swaps two basic_filebuf objects (public member function) |
