23 lines
799 B
Ruby
23 lines
799 B
Ruby
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# Fibers are primitives for implementing light weight cooperative concurrency in
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# Ruby. Basically they are a means of creating code blocks that can be paused
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# and resumed, much like threads. The main difference is that they are never
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# preempted and that the scheduling must be done by the programmer and not the VM.
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require 'fiber'
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f = Fiber.new do |value|
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first = value
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puts "first call fiber with args: #{first ? first : 'not passed'}"
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second = Fiber.yield
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puts "second call fiber with args: #{second ? second : 'not passed'}"
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other = Fiber.yield
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puts "First: #{first}, Second: #{second}, Other: #{other ? other : 'not passed'}"
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puts "Last call"
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end
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f.resume('First argument')
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f.resume('Second argument')
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f.resume
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# f.resume call error if try call one more time fiber is dead
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