H<F,G> _OR_( F f, G g );

where :

• F is the type of functor f
• G is the type of functor g
• H is the type of resulting functor

A functor of type H<F,G>

Creates a functor that returns true if either f or g returns true.

#include <iostream>
#include <vector>
#include "sftl.h"
 
using namespace std;
 
bool dividable_by_2( int x ) {
    return (x%2)==0;
}
 
bool dividable_by_3( int x ) {
    return (x%3)==0;
}
 
int main() {
 
    // create vector of numbers
    int numbers [] = {1,2,3,4,5,6,7,8,9};
    vector<int> v_numbers( &numbers[0], &numbers[9] );
 
    // extract numbers dividable by 2 OR 3
    vector<int> v = filter( v_numbers, _OR_(dividable_by_2,dividable_by_3) ); // v containes 2 3 4 6 8 9
}