Block syntax (do..end and curly braces) in Ruby - Mini Project: Build & Apply

Block syntax (do..end and curly braces)

📖 Scenario: You are helping a small bakery keep track of daily sales. Each sale has a product name and the quantity sold. You want to use Ruby blocks to process this sales data.

🎯 Goal: Learn how to use Ruby blocks with both do..end and curly braces {} syntax to iterate over sales data and calculate total items sold.

📋 What You'll Learn

Create a hash called sales with exact product names and quantities

Create a variable total_items to hold the sum of all quantities

Use a do..end block with each to add quantities to total_items

Use a curly braces {} block with each to print each product and quantity

Print the total number of items sold

💡 Why This Matters

🌍 Real World

Blocks let you process collections like sales data easily, which is common in business apps.

💼 Career

Understanding block syntax is essential for Ruby developers working on data processing, web apps, and automation.

1

Create the sales data hash

Create a hash called sales with these exact entries: 'Bread' => 10, 'Cake' => 5, 'Pie' => 7

Ruby

# Create the sales hash with exact entries
# Your code here

Need a hint?

Use curly braces {} to create the hash with keys and values separated by =>.

2

Create a total_items variable

Create a variable called total_items and set it to 0

Ruby

sales = { 'Bread' => 10, 'Cake' => 5, 'Pie' => 7 }
# Create total_items variable and set to 0
# Your code here

Need a hint?

Just write total_items = 0 to start counting from zero.

3

Use a do..end block to sum quantities

Use sales.each do |product, quantity| ... end to add each quantity to total_items

Ruby

sales = { 'Bread' => 10, 'Cake' => 5, 'Pie' => 7 }
total_items = 0
# Use do..end block to add quantities to total_items
# Your code here

Need a hint?

Use each do |product, quantity| ... end to loop through the hash and add quantities.

4

Use curly braces block to print sales and print total

Use sales.each { |product, quantity| puts "#{product}: #{quantity}" } to print each product and quantity. Then print total_items with puts total_items

Ruby

sales = { 'Bread' => 10, 'Cake' => 5, 'Pie' => 7 }
total_items = 0
sales.each do |product, quantity|
  total_items += quantity
end
# Use curly braces block to print each product and quantity
# Then print total_items
# Your code here

Need a hint?

Use curly braces {} with each to print each item. Use puts total_items to show the total.