ocher

(defn calc
 ([n]
  (reduce #(+ %1
   (let [x (- (/ (* 20.0 %2) n) 10.0)]         
    (* (Math/pow Math/E (* x (- x)) ) (/ 20.0 n) ))) 0
   (range n))))

(def N 10000)
(def M 5000)

ocher

require 'rubygems'
require 'active_record'
require 'test/unit'

DBName = 'test_custom_select'
DBUser = 'root'
DBPass = ''

unless defined?(JRUBY_VERSION)
  # require 'openssl'

ocher

class Puzzle
  attr_accessor :field
  
  def initialize
    self.field = true
  end
    
  def run
    puts field.inspect            # => true
    if false

ocher

if defined?(JRUBY_VERSION)
  # Based on: https://gist.github.com/jorgenpt/1356797
  # unfortunately it opens a new thread each time timeout is invoked :-/
  class HTTPClient
    module Timeout
      def timeout(sec, klass=nil)
        return yield(sec) if sec == nil or sec.zero?
        thread = Thread.new { yield(sec) }

        if thread.join(sec).nil?