2.5. Operating on a Series of IntegersProblemYou want to perform an operation on all integers between X and Y, such as when you're working on a contiguous section of an array or in any situations where you want to process all numbers[ 2 ] within a range.
Solution
Use a foreach ($X .. $Y) { # $_ is set to every integer from X to Y, inclusive } foreach $i ($X .. $Y) { # $i is set to every integer from X to Y, inclusive } for ($i = $X; $i <= $Y; $i++) { # $i is set to every integer from X to Y, inclusive } for ($i = $X; $i <= $Y; $i += 7) { # $i is set to every integer from X to Y, stepsize = 7 } Discussion
The first two methods use the The following code shows each technique. Here we only print the numbers we generate: print "Infancy is: "; foreach (0 .. 2) { print "$_ "; } print "\n"; print "Toddling is: "; foreach $i (3 .. 4) { print "$i "; } print "\n"; print "Childhood is: "; for ($i = 5; $i <= 12; $i++) { print "$i "; } print "\n"; See Also
The 
