rab

# frozen_string_literal: true
# https://gist.github.com/rab/9b63001d5f926468afdfa00248cf648e

begin
  require "bundler/inline"
rescue LoadError => e
  $stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
  raise e
end

rab

# frozen_string_literal: true
def get_input(prompt = '--> ')
  puts ''
  puts 'Please enter a number, odd or even.'
  print prompt
  # if the end-of-input was reached and gets returned a nil
  # or the word 'exit' or 'quit' appears (ignoring case) in the input
  if (input = gets).nil? || /exit|quit/i =~ input
    nil                         # just return a nil
  else

rab

( time ruby ./count_bm.rb ; \
  time ruby ./count_bm.rb 10000 10000 ; \
  time ruby ./count_bm.rb 1000 100000 ; \
  time ruby ./count_bm.rb 100000 10     \
  ) | tee count_bm.txt

rab

module Beer
  class Song
    VERSE_TEMPLATE = "%d bottles of beer on the wall, %d bottles of beer.\n" +
      "Take one down and pass it around, %d bottle%s of beer on the wall.\n"
    PENULTIMATE_VERSE = "1 bottle of beer on the wall, 1 bottle of beer.\n" +
      "Take it down and pass it around, no more bottles of beer on the wall.\n"
    FINAL_VERSE = "No more bottles of beer on the wall, no more bottles of beer.\n" +
      "Go to the store and buy some more, 99 bottles of beer on the wall.\n"

    def verses(starting, ending=0)

rab

source 'https://rubygems.org'

gem 'celluloid'
gem 'celluloid-io'

rab

[ruby-2.0.0dev] code/ruby $ irb
irb2.0.0> module Bar; def who; puts 'bar'; end; end
#2.0.0 => nil
irb2.0.0> class Baz; def who; puts 'baz'; end; end
#2.0.0 => nil
irb2.0.0> class Foo < Baz; def who; puts 'foo'; end; end
#2.0.0 => nil
irb2.0.0> Foo.ancestors
#2.0.0 => [Foo, Baz, Object, Kernel, BasicObject]

rab

Pi+RoR+Heroku Demo

Background

Over the course of the past two school years, my colleague Rob Biedenharn and I have been working with Tom Brinkmann's students at Little Miami High School, attempting to teach them Web development using Ruby on Rails to aid in their participation in Business Professionals of America competitions and to provide them with skills very much in demand locally.

We provided the students all the usual links to facilitate self-guided learning on Windows PCs but it quickly became evident that we were facing two challenges:

rab

const int ledRed   = 0;
const int ledGreen = 1;
const int ledBlue  = 2;

const unsigned long delayTime = 20;

// Base the cycle on the graph ( http://upload.wikimedia.org/wikipedia/commons/5/5d/HSV-RGB-comparison.svg )
// at http://en.wikipedia.org/wiki/HSL_and_HSV#From_HSV

int maxVal = 127;

rab

require 'rrobots'

class RobGreg
  include Robot
  attr_reader :events

  def near_a_wall?
    x <= size || y <= size || x >= battlefield_width - size || y >= battlefield_height - size
  end

rab

import util.Random

// rab - Rob Biedenharn
// based on Geoff Lane's Bot
// Wed Nov 14 17:44:48 EST 2012

/**
 * This bot builds a 'direction value map' that assigns an attractiveness score to
 * each of the eight available 45-degree directions. Additional behaviors:
 * - aggressive missiles: approach an enemy master, then explode