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

來自 cppreference.com
void emit();

透過在底層的 std::basic_syncbuf 上呼叫 emit(),發射所有緩衝的輸出並執行任何待處理的沖洗。

[編輯] 引數

(無)

[編輯] 示例

#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
    }
}

輸出

Hello,
World!
Greetings.
Hello, World!

[編輯] 參閱

銷燬 basic_osyncstream 併發出其內部緩衝區
(公開成員函式) [編輯]
原子地將整個內部緩衝區傳輸到被包裝的 streambuf
(std::basic_syncbuf<CharT,Traits,Allocator> 的公開成員函式) [編輯]