Module declaration syntax in Ruby - Mini Project: Build & Apply

Module declaration syntax

📖 Scenario: You are organizing a small Ruby program that groups related methods inside a module. This helps keep your code neat and reusable.

🎯 Goal: Create a Ruby module named MathHelpers that contains a method to add two numbers.

📋 What You'll Learn

Create a module named MathHelpers

Inside the module, define a method called add that takes two parameters a and b

The add method should return the sum of a and b

Call the add method from the MathHelpers module with arguments 5 and 7

Print the result of the method call

💡 Why This Matters

🌍 Real World

Modules are used in Ruby to group related methods and constants, making code easier to maintain and reuse.

💼 Career

Understanding modules is important for Ruby developers to organize code and use libraries effectively.

1

Create the module declaration

Write a module declaration named MathHelpers.

Ruby

# Your code here

Need a hint?

Use the module keyword followed by the module name and end to close it.

2

Define the add method inside the module

Inside the MathHelpers module, define a method called add that takes two parameters a and b.

Ruby

module MathHelpers
  # Define method add with parameters a and b
  # Your code here
end

Need a hint?

Use def self.add(a, b) to define a module method that can be called without creating an object.

3

Call the add method from the module

Call the add method from the MathHelpers module with arguments 5 and 7, and store the result in a variable called result.

Ruby

module MathHelpers
  def self.add(a, b)
    a + b
  end
end

# Call the add method and store the result
# Your code here

Need a hint?

Use MathHelpers.add(5, 7) to call the method and assign it to result.

4

Print the result

Print the value of the variable result.

Ruby

module MathHelpers
  def self.add(a, b)
    a + b
  end
end

result = MathHelpers.add(5, 7)

# Print the result
# Your code here

Need a hint?

Use puts result to display the sum.