What will be printed by this Ruby code?

medium📝 Predict Output Q5 of 15

Ruby - Functional Patterns in Ruby

def to_str(x)
  "Number: #{x}"
end

result = 5 |> to_str
puts result

AError: undefined method

CNumber: x

D"Number: 5"

Step-by-Step Solution

Solution:

Step 1: Pass 5 to to_str method
The pipeline operator sends 5 as argument to to_str, which returns the string "Number: 5".
Step 2: Print the returned string
puts outputs the string "Number: 5" exactly.
Final Answer:
"Number: 5" -> Option D
Quick Check:
Pipeline passes 5 to to_str = "Number: 5" [OK]

Quick Trick: Pipeline passes value as argument, so string interpolation works [OK]

Common Mistakes:

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