Namespace
Varianti

std::match_results::size

Da cppreference.com.
< cpp‎ | regex‎ | match results

 
 
Espressioni regolari libreria
Classi
Original:
Classes
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basic_regex(C++11)
sub_match(C++11)
match_results(C++11)
Algoritmi
Original:
Algorithms
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regex_match(C++11)
regex_search(C++11)
regex_replace(C++11)
Iteratori
Original:
Iterators
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regex_iterator(C++11)
regex_token_iterator(C++11)
Eccezioni
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Exceptions
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regex_error(C++11)
Tratti
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Traits
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regex_traits(C++11)
Costanti
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Constants
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syntax_option_type(C++11)
match_flag_type(C++11)
error_type(C++11)
 
std::match_results
Membri funzioni
Original:
Member functions
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match_results::match_results
match_results::~match_results
match_results::operator=
match_results::get_allocator
Stato
Original:
State
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match_results::ready
Elemento accesso
Original:
Element access
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match_results::size
match_results::max_size
match_results::empty
match_results::length
match_results::position
match_results::str
match_results::operator_at
match_results::prefix
match_results::suffix
Iteratori
Original:
Iterators
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match_results::begin
match_results::cbegin
match_results::end
match_results::cend
Formato
Original:
Format
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match_results::format
Modificatori
Original:
Modifiers
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match_results::swap
 
size_type size() const;
(dal C++11)
Restituisce il numero di sottocorrispondenze, vale a dire std::distance(begin(), end()).
Original:
Returns the number of submatches, i.e. std::distance(begin(), end()).
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Indice

[modifica] Parametri

(Nessuno)
Original:
(none)
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[modifica] Valore di ritorno

Il numero di sottocorrispondenze
Original:
The number of submatches
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[modifica] Eccezioni

noexcept specification:  
noexcept
  (dal C++11)

[modifica] Complessità

Constant
Original:
Constant
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[modifica] Vedi anche

[modifica] Esempio

#include <iostream>
#include <regex>
#include <string>
 
int main()
{
    std::regex re("a(a)*b");
    std::string target("aaab");
    std::smatch sm;
 
    std::regex_match(target, sm, re);
    std::cout << sm.size() << '\n';
}

Output:

2