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    std::basic_stringbuf::str

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    <metanoindex/>

     
    C++
     
    D'entrée / sortie de bibliothèque
    I / O manipulateurs
    C-style I / O
    Tampons
    Original:
    Buffers
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    basic_streambuf
    basic_filebuf
    basic_stringbuf
    strstreambuf (obsolète)
    Cours d'eau
    Original:
    Streams
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    Abstractions
    Original:
    Abstractions
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    ios_base
    basic_ios
    basic_istream
    basic_ostream
    basic_iostream
    Fichier E / O
    Original:
    File I/O
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    basic_ifstream
    basic_ofstream
    basic_fstream
    Chaîne I / O
    Original:
    String I/O
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    basic_istringstream
    basic_ostringstream
    basic_stringstream
    Tableau I / O
    Original:
    Array I/O
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    istrstream (obsolète)
    ostrstream (obsolète)
    strstream (obsolète)
    Types
    Original:
    Types
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    streamoff
    streamsize
    fpos
    Interface catégorie d'erreur
    Original:
    Error category interface
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    iostream_category (C++11)
    io_errc (C++11)
     
    std::basic_stringbuf
    Fonctions membres publiques
    Original:
    Public member functions
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    basic_stringbuf::basic_stringbuf
    basic_stringbuf::operator= (C++11)
    basic_stringbuf::swap (C++11)
    basic_stringbuf::str
    Protégé fonctions membres
    Original:
    Protected member functions
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    basic_stringbuf::underflow
    basic_stringbuf::pbackfail
    basic_stringbuf::overflow
    basic_stringbuf::setbuf
    basic_stringbuf::seekoff
    basic_stringbuf::seekpos
    Tiers fonctions
    Original:
    Non-member functions
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    swap(std::basic_stringbuf) (C++11)
     
    <tbody> </tbody>
    std::basic_string<CharT, Traits, Allocator> str() const;
    		 (1)
    void str( const std::basic_string<CharT, Traits, Allocator>& s);
    		 (2)
    Obtient et définit la chaîne sous-jacente .
    Original:
    Gets and sets the underlying string.
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    1)
    Crée et retourne un objet std::basic_string contenant une copie de cette séquence std::basic_stringbuf le caractère sous-jacent. Pour l'entrée-seulement les flux, la chaîne retournée contient les caractères de l'[eback(), egptr()) gamme. Pour les flux d'entrée / sortie ou de sortie uniquement, contient les caractères de pbase() le dernier caractère de la séquence indépendamment de egptr() et epptr() .
    Original:
    Creates and returns a std::basic_string object containing a copy of this std::basic_stringbuf's underlying character sequence. For input-only streams, the returned string contains the characters from the range [eback(), egptr()). For input/output or output-only streams, contains the characters from pbase() to the last character in the sequence regardless of egptr() and epptr().
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    2)
    Supprime la séquence de caractères entier sous-jacente de cette std::basic_stringbuf puis configure une nouvelle séquence de caractères sous-jacent contenant une copie du contenu de s. Les pointeurs de std::basic_streambuf sont initialisées comme suit:
    Original:
    Deletes the entire underlying character sequence of this std::basic_stringbuf and then configures a new underlying character sequence containing a copy of the contents of s. The pointers of std::basic_streambuf are initialized as follows:
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    Pour les flux d'entrée (mode & ios_base::in == true), eback() points au premier caractère, gptr() == eback() et egptr() == eback() + s.size(): l'entrée suivante va lire le premier caractère copié à partir s .
    Original:
    For input streams (mode & ios_base::in == true), eback() points at the first character, gptr() == eback(), and egptr() == eback() + s.size(): the subsequent input will read the first character copied from s.
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    Pour les flux de sortie (mode & ios_base::out == true), pbase() points au premier caractère et epptr() >= pbase() + s.size() (epptr est autorisé à pointer loin pour que le sputc() suivante serait pas immédiatement overflow())
    Original:
    For output streams (mode & ios_base::out == true), pbase() points at the first character and epptr() >= pbase() + s.size() (epptr is allowed to point farther so that the following sputc() wouldn't immediately call overflow())
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    Pour les flux append (mode & ios_base::ate == true), pptr() == pbase() + s.size(), de sorte que la sortie suivante sera ajouté au dernier caractère copié à partir s (depuis C++11)
    Original:
    For append streams (mode & ios_base::ate == true), pptr() == pbase() + s.size(), so that subsequent output will be appended to the last character copied from s (depuis C++11)
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    Pour aucun-ajout flux de sortie, pptr() == pbase(), de sorte que la production subséquente écrasera les caractères copiés à partir s .
    Original:
    For no-appending output streams, pptr() == pbase(), so that subsequent output will overwrite the characters copied from s.
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    Paramètres

    s -
    un objet chaîne de caractères contenant la séquence de caractères de remplacement
    Original:
    a string object holding the replacement character sequence
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    Retourne la valeur

    1)
    Un objet chaîne contenant une copie de cette séquence tampon de caractère sous-jacent .
    Original:
    A string object holding a copy of this buffer's underlying character sequence.
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    2)
    (Aucun)
    Original:
    (none)
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    Notes

    Cette fonction est généralement accessible via std::basic_stringstream::str() .
    Original:
    This function is typically accessed through std::basic_stringstream::str().
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    Exemple

    #include <sstream>
#include <iostream>
int main()
{
    int n;

    std::istringstream in;  // could also use in("1 2")
    in.rdbuf()->str("1 2"); // set the get area
    in >> n;
    std::cout << "after reading the first int from \"1 2\", the int is " 
              << n << ", str() = \"" << in.rdbuf()->str() << "\"\n"; // or in.str()

    std::ostringstream out("1 2");
    out << 3;
    std::cout << "after writing the int '3' to output stream \"1 2\""
              << ", str() = \"" << out.str() << "\"\n";

    std::ostringstream ate("1 2", std::ios_base::ate); // C++11
    ate << 3;
    std::cout << "after writing the int '3' to append stream \"1 2\""
              << ", str() = \"" << ate.str() << "\"\n";
}

    Résultat : 

    after reading the first int from "1 2", the int is 1, str() = "1 2"
after writing the int '3' to output stream "1 2", str() = "3 2"
after writing the int '3' to append stream "1 2", str() = "1 23"

    Voir aussi
    obtient ou définit le contenu de l'objet chaîne de périphérique sous-jacent
    Original:
    gets or sets the contents of underlying string device object
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    (fonction membre publique de std::basic_stringstream) [edit]