std::basic_streambuf::~basic_streambuf
Aus cppreference.com
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<tbody> </tbody> virtual ~basic_streambuf(); |
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Diese Zerstörung ist leer: die Mitglieder dieser
basic_streambuf (die Zeiger und die locale) werden in Übereinstimmung mit den üblichen Objekt Zerstörung Sequenz nach dieser Destruktor wieder zerstört. Da es jedoch deklariert öffentliche virtuelle, erlaubt es die Objekte, die von std::basic_streambuf abgeleitet sind, um durch einen Zeiger auf Basisklasse löschen .Original:
This destruction is empty: the members of this
basic_streambuf (the pointers and the locale) are destructed in accordance with the usual object destruction sequence after this destructor returns. However, since it is declared public virtual, it allows the objects that are derived from std::basic_streambuf to be deleted through a pointer to base class.The text has been machine-translated via Google Translate.
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Parameter
(None)
Original:
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The text has been machine-translated via Google Translate.
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Beispiel
#include <iostream>
#include <fstream>
int main()
{
std::filebuf* fbp = new std::filebuf;
fbp->open("test.txt", std::ios_base::out);
fbp->sputn("Hello\n", 6);
std::streambuf* sbp = fbp;
delete sbp; // the file is closed, output flushed and written
std::ifstream f("test.txt");
std::cout << f.rdbuf(); // proof
}
Output:
Hello