Материал из C\C++ эксперт
Demonstrate gslice()
#include <iostream>
#include <valarray>
using namespace std;
int main()
{
valarray<int> v(12), result;
valarray<size_t> len(2), interval(2);
for(int i=0; i<12; i++)
v[i] = i;
len[0] = 3;
len[1] = 3;
interval[0] = 2;
interval[1] = 3;
cout << "Contents of v: ";
for(int i=0; i<12; i++)
cout << v[i] << " ";
cout << endl;
result = v[gslice(0,len,interval)];
cout << "Contents of result: ";
for(int i=0; i<result.size(); i++)
cout << result[i] << " ";
return 0;
}
/*
Contents of v: 0 1 2 3 4 5 6 7 8 9 10 11
Contents of result:
*/
