http://www.perlmonks.org?node_id=1126565


in reply to Re^2: flip-flop interpolation
in thread flip-flop interpolation

That is like asking to draw a red line using green ink :)

The way to do it is to use the green ink to define a universe containing hardcoded red lines:

#untested, and quite silly eval "print $_ if $i .. $j;";