std::basic_filebuf::setbuf

This page has been machine-translated from the English version of the wiki using Google Translate. The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here. Click here for the English version of this page

[modifier] Paramètres

[modifier] Retourne la valeur

[modifier] Notes

• GCC 4.6 libstdc + +

  Original:

  GCC 4.6 libstdc++

  The text has been machine-translated via Google Translate.
  You can help to correct and verify the translation. Click here for instructions.

setbuf() ne peut être appelée lorsque le std::basic_filebuf n'est pas associé à un fichier (autrement n'a pas d'effet). Avec un tampon fourni par l'utilisateur, la lecture du fichier se lit n-1 octets à la fois .

Original:

setbuf() may only be called when the std::basic_filebuf is not associated with a file (has no effect otherwise). With a user-provided buffer, reading from file reads n-1 bytes at a time.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

• Clang + + + 3.0 libc

  Original:

  Clang++3.0 libc++

  The text has been machine-translated via Google Translate.
  You can help to correct and verify the translation. Click here for instructions.

setbuf() peut être appelée après l'ouverture du fichier, mais avant tout d'E / S (autrement peut se bloquer). Avec un tampon fourni par l'utilisateur, la lecture du fichier se lit plus grands multiples de 4096 qui s'inscrivent dans la mémoire tampon .

Original:

setbuf() may be called after opening the file, but before any I/O (may crash otherwise). With a user-provided buffer, reading from file reads largest multiples of 4096 that fit in the buffer.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

• Visual Studio 2010

  Original:

  Visual Studio 2010

  The text has been machine-translated via Google Translate.
  You can help to correct and verify the translation. Click here for instructions.

setbuf() peut être appelé à tout moment, même après un certain I / O a eu lieu. Contenu actuel de la mémoire tampon, le cas échéant, sont perdus .

Original:

setbuf() may be called at any time, even after some I/O took place. Current contents of the buffer, if any, are lost.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[modifier] Exemple

#include <fstream>
#include <iostream>
#include <string>
int main()
{
        int cnt=0;
        std::ifstream file;
        char buf[10241];
        file.rdbuf()->pubsetbuf(buf, sizeof buf);
        file.open("/usr/share/dict/words");
        for(std::string line; getline(file, line); )
                cnt++;
        std::cout << cnt << '\n';
}

[modifier] Voir aussi