Why operators are methods in Ruby - See It in Action

Why operators are methods in Ruby

📖 Scenario: Imagine you have a simple calculator program. In Ruby, operators like + and - are actually methods. This means you can use them like any other method to add or subtract numbers.

🎯 Goal: You will create a simple Ruby program that shows how operators are methods by calling the + method directly on numbers.

📋 What You'll Learn

Create two variables with numbers

Create a variable that calls the + method on one number with the other as argument

Create a variable that calls the - method on one number with the other as argument

Print the results

💡 Why This Matters

🌍 Real World

Understanding that operators are methods helps you read and write Ruby code more clearly and use advanced features like operator overloading.

💼 Career

Many Ruby jobs require understanding how Ruby treats operators as methods to write clean, maintainable, and flexible code.

1

Create two number variables

Create two variables called num1 and num2 with values 10 and 5 respectively.

Ruby

# Create two variables num1 and num2 with values 10 and 5
# Your code here

Need a hint?

Use = to assign values to variables.

2

Call the + method on num1

Create a variable called sum that calls the + method on num1 with num2 as argument, like this: num1.+(num2).

Ruby

num1 = 10
num2 = 5
# Create variable sum by calling num1.+(num2)
# Your code here

Need a hint?

Remember, + is a method and can be called with dot and parentheses.

3

Call the - method on num1

Create a variable called difference that calls the - method on num1 with num2 as argument, like this: num1.-(num2).

Ruby

num1 = 10
num2 = 5
sum = num1.+(num2)
# Create variable difference by calling num1.-(num2)
# Your code here

Need a hint?

Use the same method call style as for +, but with -.

4

Print the results

Print the values of sum and difference using puts.

Ruby

num1 = 10
num2 = 5
sum = num1.+(num2)
difference = num1.-(num2)
# Print sum and difference
# Your code here

Need a hint?

Use puts to show the results on the screen.