Creating a gem basics in Ruby - Try It Yourself

Creating a gem basics

📖 Scenario: You want to create a simple Ruby gem that can be shared and reused by others. A gem is like a small package of Ruby code that does something useful.In this project, you will create the basic files and structure needed for a Ruby gem, add a version number, write a simple method, and then print the result.

🎯 Goal: Build a basic Ruby gem structure with a version file and a main file that defines a simple method. Then print the output of that method.

📋 What You'll Learn

Create a gem folder structure with a main file and a version file

Define a module with a version constant

Add a method inside the module that returns a greeting string

Print the greeting string to the console

💡 Why This Matters

🌍 Real World

Ruby gems are used to share reusable code with other developers easily. Creating a gem helps organize your code and distribute it.

💼 Career

Many Ruby developers create and maintain gems as part of their work to build libraries, tools, or frameworks used by others.

1

Create the gem module and version constant

Create a Ruby module called SimpleGem. Inside it, define a constant VERSION and set it to the string "0.1.0".

Ruby

# Your code here

Need a hint?

Use module SimpleGem to start and VERSION = "0.1.0" inside it.

2

Add a greeting method inside the module

Inside the SimpleGem module, define a method called greet that returns the string "Hello from SimpleGem!".

Ruby

module SimpleGem
  VERSION = "0.1.0"

  # Your code here
end

Need a hint?

Define a class method using def self.greet that returns the greeting string.

3

Call the greeting method and store the result

Call the greet method from the SimpleGem module and store the returned string in a variable called message.

Ruby

module SimpleGem
  VERSION = "0.1.0"

  def self.greet
    "Hello from SimpleGem!"
  end
end

# Your code here

Need a hint?

Use message = SimpleGem.greet to call the method and save the result.

4

Print the greeting message

Print the variable message to the console using puts.

Ruby

module SimpleGem
  VERSION = "0.1.0"

  def self.greet
    "Hello from SimpleGem!"
  end
end

message = SimpleGem.greet

# Your code here

Need a hint?

Use puts message to show the greeting on the screen.