passing_values_between_fiber

🔄 Passing Values Between Fiber and Caller

Fibers let you exchange data between the caller and the fiber block. You can pass an argument to resume, which becomes the return value of Fiber.yield, and vice versa. This pattern helps maintain state or pass configuration dynamically.

fiber = Fiber.new do |starting|
  value = starting * 2
  input = Fiber.yield(value)
  puts "Caller sent: #{input}"
end

result = fiber.resume(5)            # result == 10
fiber.resume("Hello Fiber!")       # prints "Caller sent: Hello Fiber!"