going through some site or in some post in perlmonk site, I saw that there is a difference in the for loop syntax. They say that for $i (1..10) is much efficient than for($i=0;$i<10;$i++). For example the below code for $i (1..10) { print "HI\n"; } is efficient than for($i=0;$i<10;$i++) { print "HI\n"; }. I don't understand where does the efficiency part coming here, cause in both the cases the "print" statement going to execute for 10 or n times. Then how does the first "for" syntax is efficient? Can somone please explain?