#C:\family\ruby>irb --simple-prompt
#>> x=[0,1,2,3,4,5]
#=> [0, 1, 2, 3, 4, 5]
…
#otherwise, these will return empty arrays
#>> x[-1…2]
#=> []
#>> x[-1…-5]
#=> []
#>> x[-1…-4]
#=> []
on the second thought, what if ruby allows the above such that,
considering index equivalence for x:
0 1 2 3 4 5
-6 -5 -4 -3 -2 -1
x[-1…2]
=> [5,4,3,2]
x[-1…-5]
=> [5,4,3,2,1]
x[-1…-6].each{|x| print x}
543210 =>[5,4,3,2,1,0]
and since arrays are ordered, we may have notation for reverse traversal
of array …
dunno, just nuby here.
kind regards -botp