Re: for by 3?

[ToddAndMargo via perl6-users]

On 2019-11-23 03:35, Elizabeth Mattijsen wrote:

If you don't want any results with less than 3 lines:

     for lines.rotor(3) -> @a {
        dd @a;
     }

If you *do* want results with 3 lines:

     for lines.rotor(3, :partial) -> @a {
         dd @a;
     }

Alternately as shown below:

     for lines -> $x, $y?, $z? {
         dd $x, $y, $z
     }

Note the question marks to make $y and $z optional: otherwise the last 
iteration will throw an exception if there were less than 3 lines left.

I only want to see every third line.

loop (my $I=0; $I < @Result.elems; $I+=3) { say "@Result[$I]";}

but with a "for" loop, not a "C" loop.