not1, fonction
Retourne le complément d'un prédicat unaire.
template<class UnaryPredicate>
unary_negate<UnaryPredicate> not1(
const UnaryPredicate& _Pred
);
Paramètres
- _Pred
L'attribut unaire à inverser.
Valeur de retour
Un attribut unaire qui est la négation de l'attribut unaire modifié.
Notes
Si unary_negate est construit à partir d'un attribut Predunaire (x), il retourne ! Pred(x).
Exemple
// functional_not1.cpp
// compile with: /EHsc
#include <vector>
#include <functional>
#include <algorithm>
#include <iostream>
using namespace std;
int main()
{
vector<int> v1;
vector<int>::iterator Iter;
int i;
for (i = 0; i <= 7; i++)
{
v1.push_back(5 * i);
}
cout << "The vector v1 = ( ";
for (Iter = v1.begin(); Iter != v1.end(); Iter++)
cout << *Iter << " ";
cout << ")" << endl;
vector<int>::iterator::difference_type result1;
// Count the elements greater than 10
result1 = count_if(v1.begin(), v1.end(), bind2nd(greater<int>(), 10));
cout << "The number of elements in v1 greater than 10 is: "
<< result1 << "." << endl;
vector<int>::iterator::difference_type result2;
// Use the negator to count the elements less than or equal to 10
result2 = count_if(v1.begin(), v1.end(),
not1(bind2nd(greater<int>(), 10)));
cout << "The number of elements in v1 not greater than 10 is: "
<< result2 << "." << endl;
}
Configuration requise
En-tête : <functional>
Espace de noms : std