[Solved] Given this Ruby code, what will puts Vehicle::TYPE print? class Vehicle TYPE = "Transport" class Car TYPE = "Car" end end puts Vehicle::TYPE | Ruby

Ruby - Class Methods and Variables

Given this Ruby code, what will puts Vehicle::TYPE print?

class Vehicle
  TYPE = "Transport"
  class Car
    TYPE = "Car"
  end
end

puts Vehicle::TYPE

A"Transport"

B"Car"

CError: uninitialized constant

Dnil

Step-by-Step Solution

Solution:

Step 1: Understand constant lookup in nested classes
Constants are scoped to the class they are defined in. Vehicle::TYPE refers to the constant TYPE inside Vehicle, not inside Vehicle::Car.
Step 2: Check the code output
Vehicle::TYPE is "Transport". The inner class Car has its own TYPE, but it is not accessed here.
Final Answer:
"Transport" -> Option A
Quick Check:
Outer class constant accessed by Vehicle::TYPE = "Transport" [OK]

Quick Trick: Outer class constant accessed by ClassName::CONSTANT [OK]

Common Mistakes:

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Given this Ruby code, what will puts Vehicle::TYPE print?