std::basic_string::find_first_of

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

Stringhe libreria

Null-stringhe terminate Original: Null-terminated strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Byte stringhe

Multibyte stringhe

Stringhe larghe

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

basic_string

char_traits

 

std::basic_string

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

basic_string::basic_string

basic_string::operator=

basic_string::assign

basic_string::get_allocator

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

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

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

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

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

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

basic_string::npos

Non membri funzioni Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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

hash<std::string> hash<std::wstring> hash<std::u32string> hash<std::u16string> (C++11)

 

size_type find_first_of(const basic_string& str, size_type pos =0)const;	(1)
size_type find_first_of(const CharT* s, size_type pos, size_type count )const;	(2)
size_type find_first_of(const CharT* s, size_type pos =0)const;	(3)
size_type find_first_of( CharT ch, size_type pos =0)const;	(4)

Trova il primo carattere uguale a uno dei personaggi della sequenza di caratteri dato. Ricerca inizia pos, vale a dire il carattere trovato non deve essere in posizione precedente pos.

Original:

Finds the first character equal to one of characters in the given character sequence. Search begins at pos, i.e. the found character must not be in position preceding pos.

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1)

Trova il primo carattere uguale a uno dei personaggi str.

Original:

Finds the first character equal to one of characters in str.

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2)

Trova il primo carattere uguale a uno dei personaggi nei personaggi count prima della stringa di caratteri puntato da s. s possono includere caratteri nulli.

Original:

Finds the first character equal to one of characters in the first count characters of the character string pointed to by s. s can include null characters.

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3)

Trova il primo carattere uguale a uno dei caratteri in stringa di caratteri puntato da s. La lunghezza della stringa è determinata dal carattere null prima.

Original:

Finds the first character equal to one of characters in character string pointed to by s. The length of the string is determined by the first null character.

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4)

Trova il primo carattere uguale a ch.

Original:

Finds the first character equal to ch.

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Parametri

str	-	stringa che identifica i caratteri da ricercare Original: string identifying characters to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
pos	-	posizione in cui iniziare la ricerca Original: position at which to begin searching The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
count	-	lunghezza della stringa di caratteri che identifica i caratteri da ricercare Original: length of character string identifying characters to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
s	-	puntatore a una stringa di caratteri che identifica i caratteri da ricercare Original: pointer to a character string identifying characters to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ch	-	carattere da cercare Original: character to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valore di ritorno

posizione del carattere trovato o npos in mancanza di tale carattere, si trova.

Original:

position of the found character or npos if no such character is found.

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Eccezioni

1,4)

noexcept specification:  

noexcept

  (dal C++11)

Note

traits::eq() viene utilizzato per eseguire il confronto.

Original:

traits::eq() is used to perform the comparison.

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Vedi anche

find	trova la prima occorrenza di una sottostringa (metodo pubblico)
rfind	trova l'ultima occorrenza di una sottostringa (metodo pubblico)
find_first_not_of	trovare prima assenza di caratteri Original: find first absence of characters The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
find_last_of	trovare ultima occorrenza di caratteri Original: find last occurrence of characters The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
find_last_not_of	trovare assenza ultima di caratteri Original: find last absence of characters The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)