Why dynamic typing matters in Ruby - See It in Action

Why dynamic typing matters in Ruby

📖 Scenario: Imagine you are building a simple calculator app that can add numbers or combine words. In Ruby, you don't have to tell the program the type of data you are using. This is called dynamic typing. It means Ruby figures out the type while the program runs.

🎯 Goal: You will create variables with different types, use them in a method that adds or combines them, and see how Ruby handles types automatically.

📋 What You'll Learn

Create variables with different types (numbers and strings)

Create a method that adds or combines two inputs

Call the method with different types of inputs

Print the results to see how Ruby handles dynamic typing

💡 Why This Matters

🌍 Real World

Dynamic typing lets Ruby developers write flexible code quickly, useful in web apps, scripts, and automation.

💼 Career

Understanding dynamic typing is key for Ruby developers to write clean, adaptable code and debug type-related issues.

1

Create variables with different types

Create a variable called number1 and set it to 10. Create another variable called text1 and set it to "Hello".

Ruby

# Create variables number1 and text1 with values 10 and "Hello"
# Your code here

Need a hint?

Use = to assign values. Numbers don't need quotes, strings need quotes.

2

Create a method to add or combine inputs

Create a method called add_or_combine that takes two parameters a and b. Inside the method, return the result of a + b.

Ruby

number1 = 10
text1 = "Hello"

# Define method add_or_combine with parameters a and b
# Your code here

Need a hint?

Use def to define a method and return is optional for the last line.

3

Call the method with different types

Call add_or_combine with number1 and 5, and store the result in result1. Call add_or_combine with text1 and " World", and store the result in result2.

Ruby

number1 = 10
text1 = "Hello"

def add_or_combine(a, b)
  a + b
end

# Call add_or_combine with number1 and 5, save to result1
# Call add_or_combine with text1 and " World", save to result2
# Your code here

Need a hint?

Call the method with variables and values, assign the output to new variables.

4

Print the results

Print result1 and result2 each on a new line using puts.

Ruby

number1 = 10
text1 = "Hello"

def add_or_combine(a, b)
  a + b
end

result1 = add_or_combine(number1, 5)
result2 = add_or_combine(text1, " World")

# Print result1 and result2
# Your code here

Need a hint?

Use puts to print each result on its own line.