Mid-Level
August 19, 2026Spot the bug: Ruby on Rails
One snippet. Find the bug, or prove there isn't one.
ruby
1class CartCalculator
2 def total_with_discount(items, discount_rate)
3 subtotal = items.sum(&:price)
4 discount = subtotal * discount_rate
5 subtotal - discount
6 end
7endClick the lines that carry the problem.
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