# Keeps the average length of an Array when calling to_s
var arr_len = new Counter[Int]
+ # Compute the average array length.
fun avg_arr_len: Float do
var total = 0
var sum = 0
return sum.to_f / total.to_f
end
+ # Compute the average string length.
fun avg_s_len: Float do
var total = 0
var sum = 0
return sum.to_f / total.to_f
end
+ # Display statistics in standard output.
fun print_stats do
if arr_len.sum == 0 then
print "*** No Array stats ***"