keithrbennett

diff --git a/lib/life_game_viewer/view/life_table_model.rb b/lib/life_game_viewer/view/life_table_model.rb
index 0ee2966..6cbcba1 100644
--- a/lib/life_game_viewer/view/life_table_model.rb
+++ b/lib/life_game_viewer/view/life_table_model.rb
@@ -3,15 +3,26 @@ require 'java'
 java_import javax.swing.table.AbstractTableModel
 java_import javax.swing.JOptionPane
 
+require 'forwardable'
+

keithrbennett

#!/usr/bin/env ruby

# Creates a new Rails project configured to use
# rspec instead of TestUnit.
#
# - Keith Bennett, Github/Twitter: keithrbennett

ADD_RSPEC_COMMAND = %{

group :development, :test do

keithrbennett

# A Rails builder that will create projects using RSpec instead of TestUnit.
# Invoke as: rails new my_project builder=rspec-rails-builder.rb

class AppBuilder < Rails::AppBuilder

  # Override superclass test method to do rspec stuff.
  def test

    puts('Adding rspec to Gemfile.')
    append_rspec_to_gemfile

keithrbennett

>rails new myapp -m https://raw.github.com/RailsApps/rails-composer/master/composer.rb -T
      create  
      create  README.rdoc
      create  Rakefile
      create  config.ru
      create  .gitignore
      create  Gemfile
      create  app
      create  app/assets/images/rails.png

keithrbennett

def list_candidates(extensions, command_name)

  dirs = ENV['PATH'].split(File::PATH_SEPARATOR)
  filespecs = []
  dirs.each do |dir|
    filespec_stem = File.join(dir, command_name)
    extensions.each do |extension|
      filespecs << (filespec_stem + extension)
    end
  end

keithrbennett

#!/usr/bin/env ruby

LINE_SEPARATOR = '-' * 79


# Currying - using a function that takes n parameters,
# create a new function that call it, providing some of those
# parameters so that it requires < n parameters
# (e.g. double for mult, square for power below):

keithrbennett

=begin

The "Class Variable" Method in class GuidProvider1 (the "@@" notation) is
simpler to use, but violates the principle that the object that owns a
variable is the only one who can directly read or modify it. That is, there
is no privacy or protection, in that there is no way the instances can be
prevented from reading and writing to the variable (for example, the 'next'
instance method does both).

In contrast, the "Class Instance Variable" single @ notation as shown in

keithrbennett

  def prime_numbers(upper_bound)
    return [] if upper_bound < 2
    primes = [2]
    3.upto(upper_bound) do |n|
      is_prime = !!! primes.detect { |prime| mult_of?(n, prime) }
      primes << n if is_prime
    end
    return primes
  end

keithrbennett

# JRuby 1.7.1 on Mac OS X, java version "1.6.0_37"
>rvm 1.9

>ruby -e "require 'resolv'; puts Resolv.getaddress 'cnn.com'"
157.166.255.19

>rvm jruby # 1.7.1
>ruby -e "require 'resolv'; puts Resolv.getaddress 'cnn.com'"
Resolv::ResolvError: no address for cnn.com
getaddress at /Users/keithb/.rvm/rubies/jruby-1.7.1/lib/ruby/1.9/resolv.rb:93

keithrbennett

# Illustrates the overhead of the JRuby <--> Java bridge
# parameter and return value type conversions, and the
# dramatic performance improvement that can be had by
# specifying the Java overload using java_method.

require 'java'
require 'benchmark'

ITERATION_COUNT = ARGV.empty? ? 100_000 : ARGV.first.to_i
JMath = java.lang.Math