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      std::basic_stringbuf::str

      De cppreference.com
      < cpp‎ | io‎ | basic stringbuf

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      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
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      Non-member functions
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      swap(std::basic_stringbuf) (C++11)
       
      std::basic_string<CharT, Traits, Allocator> str()const;
      		 (1)
      void str(conststd::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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      Sommaire

      [modifier]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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      [modifier]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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      [modifier]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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      [modifier]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"

      [modifier]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]
      Récupérée de « https://fr.cppreference.com/mwiki/index.php?title=cpp/io/basic_stringbuf/str&oldid=48317 »
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