How to make like Fortran "do i = 1,20,2"

[reinert@ola.npolar.no (Reinert Korsnes)]

Hi,

How can one in Ada elegantly make a loop through each 2 element of an array ?  
I am looking for something like: "do i = 1,20,2" in Fortran, or

for I in A'range ("step 2") loop
   something...
end loop;

Yes, I can use:

I := A'first;
while I <= A'Last loop;
  something..
  I := I + 2;
end loop;

But this does not look so elegant....

reinert

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