[Solved] Identify the error in this Fiber usage:fiber = Fiber.new do puts 'Start' Fiber.yield puts 'End' end fiber.yield fiber.resume | Ruby

Ruby - Concurrent Programming

Identify the error in this Fiber usage:

fiber = Fiber.new do
  puts 'Start'
  Fiber.yield
  puts 'End'
end

fiber.yield
fiber.resume

ACalling Fiber.yield outside a Fiber block causes an error

BFiber.resume must be called before Fiber.yield

CFiber.new requires a parameter for yield count

DFiber cannot print inside its block

Step-by-Step Solution

Solution:

Step 1: Check where Fiber.yield is called
The code calls fiber.yield outside the Fiber block, which is invalid.
Step 2: Understand Fiber.yield usage
Fiber.yield is a class method to pause current Fiber, not an instance method on Fiber objects.
Final Answer:
Calling Fiber.yield outside a Fiber block causes an error -> Option A
Quick Check:
Fiber.yield only inside Fiber block [OK]

Quick Trick: Fiber.yield is called inside Fiber block only [OK]

Common Mistakes:

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