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std::match_results::size

De cppreference.com
< cpp‎ | regex‎ | match results

 
 
Regular expressions bibliothèque
Classes
Original:
Classes
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basic_regex (C++11)
sub_match (C++11)
match_results (C++11)
Algorithmes
Original:
Algorithms
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regex_match (C++11)
regex_search (C++11)
regex_replace (C++11)
Les itérateurs
Original:
Iterators
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regex_iterator (C++11)
regex_token_iterator (C++11)
Exceptions
Original:
Exceptions
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regex_error (C++11)
Traits
Original:
Traits
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regex_traits (C++11)
Constantes
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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
Les fonctions membres
Original:
Member functions
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match_results::match_results
match_results::~match_results
match_results::operator=
match_results::get_allocator
État
Original:
State
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match_results::ready
Elément d'accès
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
Les itérateurs
Original:
Iterators
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match_results::begin
match_results::cbegin
match_results::end
match_results::cend
Format
Original:
Format
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match_results::format
Modificateurs
Original:
Modifiers
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match_results::swap
 
size_type size() const;
(depuis C++11)
Retourne le nombre de sous-correspondances, à savoir std::distance(begin(), end()) .
Original:
Returns the number of submatches, i.e. std::distance(begin(), end()).
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Sommaire

[modifier] Paramètres

(Aucun)
Original:
(none)
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[modifier] Retourne la valeur

Le nombre de sous-correspondances
Original:
The number of submatches
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[modifier] Exceptions

noexcept specification:  
noexcept
   (depuis C++11)

[modifier] Complexité

Constante
Original:
Constant
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[modifier] Voir aussi

[modifier] Exemple

#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';
}

Résultat :

2