for (@array) {
	do_something_with($_, ++ state $i);
}

# Prints
#  1.  'red'
#  2.  'blue'
#  3.  'green'
#  4.  'yellow'
#  5.  'black'
#  6.  'white'
#  7.  'purple'
#  8.  'brown'
#  9.  'orange'
# 10.  'gray'