[Solved] What will this Ruby code output?class Framework def self.before_save(&block) @before_save = block end def self.run_before_save @before_save.call if @before_save end end Framework.... | Ruby

Ruby - Advanced Metaprogramming

What will this Ruby code output?

class Framework
  def self.before_save(&block)
    @before_save = block
  end

  def self.run_before_save
    @before_save.call if @before_save
  end
end

Framework.before_save { puts 'Saving...'}
Framework.run_before_save

AError: no block given

BNo output

CError: undefined method call

DSaving...

Step-by-Step Solution

Solution:

Step 1: Understand hook assignment and call
The before_save method stores a block in @before_save. run_before_save calls this block if set.
Step 2: Trace the code execution
We assign a block that prints 'Saving...'. Then run_before_save calls it, printing the message.
Final Answer:
Saving... -> Option D
Quick Check:
Hook block called = A [OK]

Quick Trick: Stored blocks run when called explicitly [OK]

Common Mistakes:

Assuming no output without explicit call
Confusing block storage with immediate execution
Expecting errors without block checks

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What will this Ruby code output?

Step 1: Understand hook assignment and call

Step 2: Trace the code execution

Final Answer:

Quick Check:

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