[Solved] Given an array of hashes representing products: products = [ {name: "Pen", price: 1.5, stock: 10}, {name: "Notebook", price: 2.0, stock: 0}, {name: "Eraser", price: 0.5, stock:... | Ruby

Ruby - Enumerable and Collection Processing

Given an array of hashes representing products:

products = [
  {name: "Pen", price: 1.5, stock: 10},
  {name: "Notebook", price: 2.0, stock: 0},
  {name: "Eraser", price: 0.5, stock: 5}
]

How would you use sort_by to get products sorted by price but only include those with stock greater than zero?

Aproducts.sort_by { |p| p[:stock] }.select { |p| p[:price] > 0 }

Bproducts.sort_by { |p| p[:price] if p[:stock] > 0 }

Cproducts.sort_by { |p| p[:stock] > 0 ? p[:price] : 0 }

Dproducts.select { |p| p[:stock] > 0 }.sort_by { |p| p[:price] }

Step-by-Step Solution

Solution:

Step 1: Filter products with stock > 0
Use select to keep only products where stock is greater than zero.
Step 2: Sort filtered products by price
Apply sort_by on the filtered array to sort by price.
Final Answer:
products.select { |p| p[:stock] > 0 }.sort_by { |p| p[:price] } -> Option D
Quick Check:
Filter then sort_by for correct result [OK]

Quick Trick: Filter first, then sort_by for combined conditions [OK]

Common Mistakes:

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