luckydev

Person = Class.new do
  
  #instance method
  def say_hi
    puts "Hi, Do you like Ruby?"
  end

end

Person.new.say_hi

luckydev

module A 
  def say_hi(a,b,c)
    puts "Hi, from [A] module. Numbers - #{a} #{b} #{c}"
  end
end

class B
  include A

  def say_hi(a,b,c)

luckydev

module A 
  def say_hi(a,b,c)
    puts "Hi, from [A] module. Numbers - #{a} #{b} #{c}"
  end
end

class B
  include A

  def say_hi(a,b,c)

luckydev

module A 
  def say_hi(a,b,c)
    puts "Hi, from [A] module. Numbers - #{a} #{b} #{c}"
  end
end

class B
  include A

  def say_hi(a,b,c)

luckydev

module A 
  def say_hi(a,b,c)
    puts "Hi, from [A] module. Numbers - #{a} #{b} #{c}"
  end
end

class B
  include A

  def say_hi(a,b,c)

luckydev

class Person
   def say_hi
      puts "Hi, this is Ruby!"
   end
end

john = Person.new
robin = Person.new 

john.say_hi   # => Hi, this is Ruby!

luckydev

class MyClass

  def my_instance_method
    puts "this is an instance method"
  end

  #self here is MyClass
  class << self
    def count_objects
      "counting objects..DONE"

luckydev

$ bundle install
Fetching source index for http://rubygems.org/
Installing rake (0.9.2) 
Installing abstract (1.0.0) 
Installing activesupport (3.0.5) 
Installing builder (2.1.2) 
Installing i18n (0.6.0) 
Installing activemodel (3.0.5) 
Installing erubis (2.6.6) 
Installing rack (1.2.3) 

luckydev

ruby-1.9.2-p180 :001 >   Account.find(34)
ActiveRecord::RecordNotFound: Couldn't find Account with ID=34
	from /Users/lakshman/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/relation/finder_methods.rb:296:in `find_one'
	from /Users/lakshman/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-
ruby-1.9.2-p180 :002 > Account.where(:id => 34).first
 => nil 
ruby-1.9.2-p180 :003 > Account.where(:id => 34)
 => []

luckydev

def my_awesome_method
  ret = lambda { return "This is returned from Lambda" }
  ret.call
  "This line will run"
end

puts my_awesome_method

# => "This is returned from Lambda"
# => "This line will run"