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Varianti

std::basic_ios::init

Da cppreference.com.
< cpp‎ | io‎ | basic ios

 
 
Ingresso / libreria di output
I / O manipolatori
C-style I / O
Buffer
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(deprecato)
Streams
Original:
Streams
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Astrazioni
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
String I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
Original:
Array I/O
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istrstream(deprecato)
ostrstream(deprecato)
strstream(deprecato)
Tipi
Original:
Types
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streamoff
streamsize
fpos
Errore categoria interfaccia
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_ios
Membri funzioni
Original:
Member functions
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basic_ios::basic_ios
basic_ios::~basic_ios
Le funzioni dello Stato
Original:
State functions
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basic_ios::good
basic_ios::eof
basic_ios::fail
basic_ios::bad
basic_ios::operator!
basic_ios::operator bool
basic_ios::rdstate
basic_ios::setstate
basic_ios::clear
Formattazione
Original:
Formatting
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basic_ios::copyfmt
basic_ios::fill
Varie
Original:
Miscellaneous
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basic_ios::exceptions
basic_ios::imbue
basic_ios::rdbuf
basic_ios::tie
basic_ios::narrow
basic_ios::widen
Protetto funzioni membro
Original:
Protected member functions
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basic_ios::init
basic_ios::move
basic_ios::swap
basic_ios::set_rdbuf
 
protected:
void init( std::basic_streambuf<CharT,Traits>* sb );
Consente di impostare il buffer associato al flusso sb e inizializza lo stato interno.
Original:
Sets the associated stream buffer to sb and initializes the internal state.
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Le post sono i seguenti:
Original:
The postconditions are as follows:
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Element Value
rdbuf() sb
tie() NULL
rdstate() goodbit if sb is not NULL, otherwise badbit
exceptions() goodbit
flags() skipws | dec
width() 0
precision() 6
fill() widen(' ')
getloc() a copy of the value returned by std::locale()
Questa funzione membro è protetta: viene chiamato dai costruttori delle classi derivate flusso std::basic_istream std::basic_ostream e una volta che il buffer del flusso associato è noto. Fino a quando questa funzione viene chiamata, ogni funzione membro (diverso il distruttore) della std::basic_ios default-costruito richiama un comportamento indefinito. Si noti che basic_ios è una classe base virtuale, e quindi il suo costruttore non viene chiamato dai costruttori di queste classi direttamente derivati, ed è per questo in due fasi di inizializzazione è necessario.
Original:
This member function is protected: it is called by the constructors of the derived stream classes std::basic_istream and std::basic_ostream once the associated stream buffer is known. Until this function is called, every member function (other than the destructor) of the default-constructed std::basic_ios invokes undefined behavior. Note that basic_ios is a virtual base class, and therefore its constructor is not called by the constructors of those directly derived classes, which is why two-stage initialization is necessary.
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[modifica] Parametri

sb -
buffer del flusso di associare a
Original:
stream buffer to associate to
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[modifica] Vedi anche

Costruisce l'oggetto
Original:
constructs the object
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(membro pubblico funzione) [edit]