Namespace
Varianti

std::basic_string::data

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< cpp‎ | string‎ | basic string

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C++
 
Stringhe libreria
Null-stringhe terminate
Original:
Null-terminated strings
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Byte stringhe
Multibyte stringhe
Stringhe larghe
Classi
Original:
Classes
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basic_string
char_traits
 
std::basic_string
Membri funzioni
Original:
Member functions
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basic_string::basic_string
basic_string::operator=
basic_string::assign
basic_string::get_allocator
Elemento accesso
Original:
Element access
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basic_string::at
basic_string::operator[]
basic_string::front(C++11)
basic_string::back(C++11)
basic_string::data
basic_string::c_str
Iteratori
Original:
Iterators
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basic_string::begin
basic_string::cbegin
(C++11)
basic_string::end
basic_string::cend
(C++11)
basic_string::rbegin
basic_string::crbegin
(C++11)
basic_string::rend
basic_string::crend
(C++11)
Capacità
Original:
Capacity
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basic_string::empty
basic_string::size
basic_string::length
basic_string::max_size
basic_string::reserve
basic_string::capacity
basic_string::shrink_to_fit(C++11)
Operazioni
Original:
Operations
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basic_string::clear
basic_string::insert
basic_string::erase
basic_string::push_back
basic_string::pop_back(C++11)
basic_string::append
basic_string::operator+=
basic_string::compare
basic_string::replace
basic_string::substr
basic_string::copy
basic_string::resize
basic_string::swap
Cerca
Original:
Search
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basic_string::find
basic_string::rfind
basic_string::find_first_of
basic_string::find_first_not_of
basic_string::find_last_of
basic_string::find_last_not_of
Costanti
Original:
Constants
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basic_string::npos
Non membri funzioni
Original:
Non-member functions
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operator+
operator==
operator!=
operator<
operator>
operator<=
operator>=
swap(std::basic_string)
operator<<
operator>>
getline
stoi
stol
stoll		(C++11)
(C++11)
(C++11)
stoul
stoull		(C++11)
(C++11)
stof
stod
stold		(C++11)
(C++11)
(C++11)
to_string(C++11)
to_wstring(C++11)
Helper classi
Original:
Helper classes
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hash<std::string>
hash<std::wstring>
hash<std::u32string>
hash<std::u16string>		(C++11)
 
const CharT* data() const;
Restituisce il puntatore alla matrice sottostante che funge da deposito di caratteri.
Original:
Returns pointer to the underlying array serving as character storage.
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Se empty() ritorna false, il puntatore è tale che l'intervallo [data(); data() + size()) è valido e valori in esso corrispondono ai valori memorizzati nella stringa. Se empty() restituisce true, il puntatore non è un puntatore nullo che non devono essere dereferenced. (fino al c++11)
Original:
If empty() returns false, the pointer is such that the range [data(); data() + size()) is valid and the values in it correspond to the values stored in the string. If empty() returns true, the pointer is a non-null pointer that should not be dereferenced. (fino al c++11)
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Il puntatore è tale che l'intervallo [data(); data() + size()] è valido e valori in esso corrispondono ai valori memorizzati nella stringa (compreso il carattere nullo aggiuntiva) anche quando empty() ritorna true. (dal C++11)
Original:
The pointer is such that the range [data(); data() + size()] is valid and the values in it correspond to the values stored in the string (including the additional null character) even when empty() returns true. (dal C++11)
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Indice

Note

La scrittura della matrice di caratteri si accede tramite data è un comportamento indefinito.
Original:
Writing to the character array accessed through data is undefined behavior.
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Il puntatore ottenuto da data() non dovrebbe essere considerata valida dopo qualsiasi non-const operazione sulla stringa.
Original:
The pointer obtained from data() should not be considered valid after any non-const operation on the string.
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Dal momento che C + +11, data() c_str() e svolgono la stessa funzione.
Original:
Since C++11, data() and c_str() perform the same function.
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Parametri

(Nessuno)
Original:
(none)
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Valore di ritorno

Puntatore alla memoria carattere di fondo in modo tale che per ogni data()[i] == operator[](i) i in [0, size()). (fino al c++11)
Original:
Pointer to the underlying character storage such that data()[i] == operator[](i) for every i in [0, size()). (fino al c++11)
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Puntatore alla memoria carattere di fondo in modo tale che per ogni data() + i == &operator[](i) i in [0, size()]. (dal C++11)
Original:
Pointer to the underlying character storage such that data() + i == &operator[](i) for every i in [0, size()]. (dal C++11)
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Complessità

Costante.
Original:
Constant.
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Eccezioni

noexcept specification:  
noexcept
  (dal C++11)

Vedi anche

(C++11)
 accede al primo carattere
(metodo pubblico) [modifica]
(C++11)
 accede all'ultimo carattere
(metodo pubblico) [modifica]
restituisce una versione della stringa data da un array standard C di caratteri non modificabile
(metodo pubblico) [modifica]
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/string/basic_string/data&oldid=26696"