brianewing

class Fixnum
  def power_of?(i)
    self != 0 and Math.log(self.abs, i) % 1 == 0
  end
end

puts 8.power_of? 2     # => true
puts 64.power_of? 2    # => true
puts 27.power_of? 3    # => true
puts 27.power_of? 4    # => false

brianewing

import os, hashlib, urllib2, optparse

def get_remote_md5_sum(url, max_file_size=100*1024*1024):
    remote = urllib2.urlopen(url)
    hash = hashlib.md5()

    total_read = 0
    while True:
        data = remote.read(4096)
        total_read += 4096