Online Ruby Editor and Code Runner

Free online Ruby editor with real-time execution, console output, and standard library support. Perfect for learning Ruby, testing code, and practicing object-oriented programming.

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Features

Ruby Execution

Execute Ruby code directly in your browser

Console Output

Real-time console output with puts and p support

Standard Library

Access to Ruby's rich standard library

Error Detection

Clear error messages and stack traces

Gem Support

Common Ruby gems pre-installed

Code Sharing

Share Ruby code snippets with others

Frequently Asked Questions

How to get started with Ruby?

Start with basic syntax:

puts "Hello, World!"

# Define variables
name = "Ruby"

# Use string interpolation
puts "Hello, #{name}!"

# Try methods
def greet(name)
  puts "Hello, #{name}!"
end

Our editor provides real-time execution and immediate feedback.

How to work with arrays and hashes in Ruby?

Here's how to work with arrays and hashes:

# Create and modify arrays
fruits = ["apple", "banana"]
fruits.push("orange")

# Create and use hashes
person = { name: "John", age: 30 }
puts person[:name]

# Use enumerable methods
fruits.each { |fruit| puts fruit }

Practice these in our editor with instant output.

How to use classes and objects in Ruby?

Learn object-oriented programming in Ruby:

# Define a class
class Person
  attr_accessor :name
  
  def initialize(name)
    @name = name
  end
  
  def greet
    puts "Hello, #{@name}!"
  end
end

# Create and use objects
person = Person.new("John")
person.greet

Test these object-oriented concepts in our sandbox environment.

How to handle errors in Ruby?

Learn error handling patterns:

# Basic error handling
begin
  # code that might fail
  result = 10 / 0
rescue StandardError => e
  puts e.message
end

# Custom errors
class MyError < StandardError; end

# Raising errors
raise MyError, "Something went wrong"

Practice error handling with immediate feedback.

How to use Ruby blocks and iterators?

Explore blocks and iterators:

# Basic block usage
[1, 2, 3].each { |num| puts num }

# Method with block
def my_method
  puts "Before yield"
  yield if block_given?
  puts "After yield"
end

# Different iterators
array = [1, 2, 3, 4, 5]
array.map { |n| n * 2 }    # Transform
array.select { |n| n > 2 } # Filter
array.reduce(:+)           # Aggregate

Experiment with block syntax and closures in our editor.

How to use Ruby modules and mixins?

Understand modules and mixins:

# Define a module
module Greetable
  def greet
    puts "Hello!"
  end
  
  def farewell
    puts "Goodbye!"
  end
end

# Use as mixin
class Person
  include Greetable
end

# Use as namespace
module MyApp
  class User
    def initialize(name)
      @name = name
    end
  end
end

Practice module concepts with real-time execution.