std::basic_osyncstream::emit
From cppreference.com
< cpplrm; | iolrm; | basic osyncstream
| void emit(); |
||
Emits all buffered output and executes any pending flushes, by calling emit() on the underlying std::basic_syncbuf.
Parameters
(none)
Example
Run this code
#include <syncstream> #include <iostream> int main() { { std::osyncstream bout(std::cout); std::bout << "Hello," << '\n'; // no flush std::bout.emit(); // characters transferred; cout not flushed std::bout << "World!" << std::endl; // flush noted; cout not flushed std::bout.emit(); // characters transferred; cout flushed std::bout << "Greetings." << '\n'; // no flush } // destructor calls emit(): characters transferred; cout not flushed // emit can be used for local exception-handling on the wrapped stream std::osyncstream bout(std::cout); bout << "Hello, " << "World!" << '\n'; try { bout.emit(); } catch (...) { // handle exceptions } }
Output:
Hello, World! Greetings. Hello, World!
See also
| destroys the basic_osyncstream and emits its internal buffer (public member function) | |
| atomically transmits the entire internal buffer to the wrapped streambuf (public member function of std::basic_syncbuf) |