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

From cppreference.com
< cpp‎ | io‎ | basic osyncstream
 
 
 
 
void emit();

Emits all buffered output and executes any pending flushes, by calling emit() on the underlying std::basic_syncbuf.

[edit] Parameters

(none)

[edit] Example

Run this code
#include <iostream>
#include <syncstream>
 
int main()
{
 {
 std::osyncstream bout(std::cout );
 bout << "Hello," << '\n'; // no flush
 bout.emit(); // characters transferred; cout not flushed
 bout << "World!" << std::endl ; // flush noted; cout not flushed
 bout.emit(); // characters transferred; cout flushed
 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!

[edit] See also

destroys the basic_osyncstream and emits its internal buffer
(public member function) [edit]
atomically transmits the entire internal buffer to the wrapped streambuf
(public member function of std::basic_syncbuf<CharT,Traits,Allocator>) [edit]
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