[Solved] What will this Ruby code print?class Test [:a, :b].each do |name| define_method(name) { name.to_s.upcase } end end t = Test.new puts t.a + t.b | Ruby

Ruby - Metaprogramming Fundamentals

What will this Ruby code print?

class Test
  [:a, :b].each do |name|
    define_method(name) { name.to_s.upcase }
  end
end

t = Test.new
puts t.a + t.b

ANoMethodError

BAB

Ca b

Dab

Step-by-Step Solution

Solution:

Step 1: Analyze method definitions
Methods :a and :b are defined to return their symbol name as uppercase strings.
Step 2: Check output of method calls
Calling t.a returns "A", t.b returns "B", so concatenating prints "AB".
Final Answer:
AB -> Option B
Quick Check:
Dynamic methods return uppercase names = AB [OK]

Quick Trick: Symbols can be converted to uppercase strings with to_s.upcase [OK]

Common Mistakes:

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