ruby - Count IP addresses -

i stored following ips in array:

10.2.3.1 10.2.3.5 10.2.3.10 - 10.2.3.15 

i'm trying count total number of ip addresses. total number of ip addresses should 8. when iterate through array, total of 3 counts. need way count third item:

10.2.3.10 - 10.2.3.15 

are there ip address counters?

if need convert ip range, you'll need function converts ipv4 value integer, math on those:

require 'ipaddr'  def ip(string)   ipaddr.new(string).to_i end  def parse_ip(string)   string.split(/\s+\-\s+/).collect { |v| ip(v) } end  def ip_range(string)   ips = parse_ip(string)    ips.last - ips.first + 1 end  ip_range("10.2.3.10 - 10.2.3.15") # => 6 

that should it.