Template Method Design Pattern: Code Maestro's Sheet Music for Harmonious Tasks

Hey code composers! Ever wished your code could follow a harmonious melody, with each instrument playing its part seamlessly? The Template Method Design Pattern is like having a sheet music for your code – it defines the skeleton of an algorithm, letting the steps be implemented by different instruments (or subclasses). It's the ultimate conductor's baton for your code, ensuring a symphony of tasks performed with perfect harmony!

Concept:

• AbstractClass: Your conductor, providing the template method with steps for the algorithm.
• ConcreteClass: The instrumentalists, implementing the specific steps in their unique ways.
• Client: You, the maestro orchestrating this coding symphony.

Ruby Symphony of Code:

Let's waltz into a Ruby adventure that's as enchanting as a serenade and as delightful as a musical soirée.

AbstractClass:

# Your conductor - the AbstractClass
class MusicComposer
  def compose
    write_music
    add_instruments
    conduct
  end

  def write_music
    raise NotImplementedError, 'Subclasses must implement the write_music method'
  end

  def add_instruments
    puts 'Adding instruments to the composition...'
  end

  def conduct
    raise NotImplementedError, 'Subclasses must implement the conduct method'
  end
end

ConcreteClass:

# The instrumentalists - the ConcreteClass
class ClassicalComposer < MusicComposer
  def write_music
    puts 'Writing a classical composition...'
  end

  def conduct
    puts 'Conducting a classical symphony!'
  end
end

class JazzComposer < MusicComposer
  def write_music
    puts 'Writing a jazzy tune...'
  end

  def conduct
    puts 'Conducting a lively jazz ensemble!'
  end
end

Symphony Code:

# The maestro's sheet music
classical_conductor = ClassicalComposer.new
jazz_conductor = JazzComposer.new

# Let the symphony begin!
puts 'Classical Symphony:'
classical_conductor.compose

puts "\nJazz Ensemble:"
jazz_conductor.compose

Why It's a Symphony of Code:

The Template Method Design Pattern is like conducting a symphony with code. It provides a structured way to define an algorithm, allowing different instruments (or subclasses) to play their part seamlessly. So, whether you're orchestrating a coding soirée or just want your code to follow a harmonious melody, the Template Method Pattern is your maestro's baton. Conduct on, code composers, conduct on! 🎻✨