codesword

eval("5 + 10")                         #=> 15
eval("def name; 'Ikem Okonkwo'; end;") # creates a method called name
name                                   #=> "Ikem Okonkwo" calls the method created by eval

codesword

class Person
  c = %q{def company; "Andela"; end}
  instance_eval(c)

  def initialize
    @name = "Ikem Okonkwo"
  end

  def make
    instance_eval("def name; 'Ikem Okonkwo'; end")

codesword

class Person
  name = %q{def name; "Ikem Okonkwo"; end}
  class_eval(name)
end

Person.name #=> undefined method error
Person.new.name #=> "Ikem Okonkwo"

codesword

class Person
  @@name = "codesword"
end

Person.class_variable_get(:@@name) #=> "codesword"
Person.class_variable_set(:@@name, "Ikem")
Person.class_variable_get(:@@name) #=> "Ikem"
Person.new.class_variable_get("@@name") #=> undefined method

codesword

class Person
  @book = "Harry Porter"
  def initialize
    @book = "The Rails Way"
  end
end

Person.instance_variable_get(:@book) #=> "Harry Porter"
Person.new.instance_variable_get(:@book) #=> "The Rails Way"

codesword

class Director
  def train_new_fellow(fellow)
    puts "Will DO"
  end
end

codesword

class TrainingTeam
  def train_new_fellow(name)
    # Trains all new fellow
  end

  def completed_initial_training
    # Returns fellows that has completed training
  end
end

codesword

class TrainingTeam
  def train_new_fellow(name)
    # Trains all new fellow
  end

  def training_period(fellow_name)
    # Returns the period the fellow has been in training
  end
end

codesword

require 'forwardable'
class Director
  attr_reader :training_team, :fellows
  def_delegator :training_team, :train_new_fellow, :train_new_fellow
  
  def initialize
    @training_team = TrainingTeam.new
  end
end

codesword

class RubyTrainingTeam
  def train_new_fellow(name)
    # Trains all new fellow in ruby track
  end
end

class PythonTrainingTeam
  def train_new_fellow(name)
    # Trains all new fellowin python track
  end