slice::slice


public member function
slice ();
slice (size_t start, size_t length, size_t stride);
slice (const slice& slc);

slice constructor

Constructs a slice object.

Parameters

start
Index of the first element in the slice.
The index of the first element in a valarray is 0, not 1.
size_t is an unsigned integral type.
length
Number of elements in the slice.
size_t is an unsigned integral type.
stride
Separation between the elements selected into the slice.
size_t is an unsigned integral type.
slc
Slice object (copy constructor).


Example

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
// slice::slice example
#include <iostream>
#include <valarray>
using namespace std;

int main ()
{
  valarray<int> foo (12);
  for (int i=0; i<12; ++i) foo[i]=i;

  slice first;
  slice second (2,3,4);
  slice third (second);

  valarray<int> bar = foo[third];

  for (size_t n=0; n<bar.size(); n++)
	  cout << bar[n] << ' ';
  cout << endl;

  return 0;
}


Output:

2 6 10


See also

slice::start Return start of slice (public member function)
slice::size Return size of slice (public member function)
slice::stride Return stride of slice (public member function)