eric1234

class Numeric
  def divisible_by? num
    self % num == 0
  end

  def prime?
    not (2..self.sqrt.floor).any? {|i| self.divisible_by? i}
  end

  def sqrt

eric1234

class Numeric
  def palindromic?
    to_s.reverse == to_s
  end
end

class Range
  def reverse
    ReverseRange.new last, first, exclude_end?
  end

eric1234

class Numeric
  def divisible_by? num
    self % num == 0
  end
end

possible = increment = 20 * 19
test = (11..18).to_a.reverse
loop do
  if test.all? {|d| possible.divisible_by? d}

eric1234

class Numeric
  def squared
    self * self
  end
end

module Enumerable
  def sum &blk
    blk = proc {|x| x} unless block_given?
    inject(0) {|sum, element| sum + (blk[element] || 0)}

eric1234

class Numeric
  def divisible_by? num
    self % num == 0
  end

  def prime?
    not (2..self.sqrt.floor).any? {|i| self.divisible_by? i}
  end

  def sqrt

eric1234

module Enumerable
  def prod
    inject(1) {|t, i| t * i.to_i}
  end
end

num = DATA.read.gsub /\s/, ''
puts (0..num.length-5).collect {|start| num[start, 5].chars.prod}.max

__END__

eric1234

class Numeric
  def squared
    self * self
  end
end

(1..1000/3).each do |a| 
  (a+1..1002-2*a).each do |b|
    c = 1000 - a - b
    if a + b > c && a.squared + b.squared == c.squared

eric1234

mogrify -thumbnail 248x157^ -gravity center -extent 248x157 '*.jpg'

eric1234

desc "Generate Heroku gems manifest from environment.rb"
task 'heroku:gems:manifest' do
  manifest = nil
  IO.popen('-') do |io|
    if io
      manifest = io.read
    else
      system 'script/runner', %q{
        out = Rails.configuration.gems.collect do |gem|
          gem.send(:install_command)[1..-1] * " "

eric1234

class Numeric
  def divisible_by? num
    self % num == 0
  end

  def sqrt
    Math.sqrt self
  end

  def prime?(preprocessed=(2..self.sqrt.floor))