performance optimize these 4 lines of ruby

hedpe · 12-28-2006, 03:35 AM

Hey everyone

My performance bottleneck of my ruby script is the following method:

Code:

def ip_to_int(ip)
  bytes = ip.split('.')
  return (bytes[0].to_i*16777216+bytes[1].to_i*65536+bytes[2].to_i*256+bytes[3].to_i)
end

Can anyone think of any ways to optimize it for runtime?

Thanks!
George

jschiwal · 12-28-2006, 09:38 PM

Shift operators tend to be much faster than multiplication when you are dealing with powers of two.