std::match_results::prefix
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<metanoindex/>
<tbody> </tbody> const_reference prefix() const; |
(depuis C++11) | |
Paramètres
(Aucun)
Original:
(none)
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Retourne la valeur
Retourne un sub_match représentant la partie de la séquence cible, entre le début de la séquence cible et l'intégralité du match de l'expression régulière .
Original:
Returns a sub_match representing the part of the target sequence between the beginning of the target sequence and the entire match of the regular expression.
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Exemple
#include <iostream>
#include <regex>
#include <string>
int main()
{
std::regex re("a(a)*b");
std::string target("baaaby");
std::smatch sm;
std::regex_search(target, sm, re);
std::cout << sm.prefix().str() << '\n';
}
Résultat :
b