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#!/usr/bin/env ruby
$: << File.expand_path('../../../lib', __FILE__)
require 'concurrent-edge'
Channel = Concurrent::Channel
## A Tour of Go: Select
# https://tour.golang.org/concurrency/5
def fibonacci(c, quit)
x, y = 0, 1
loop do
Channel.select do |s|
s.case(c, :<<, x) { x, y = y, x+y; x } # alias for `s.put`
s.case(quit, :~) do # alias for `s.take`
puts 'quit'
return
end
end
end
end
c = Channel.new
quit = Channel.new
Channel.go do
10.times { puts ~c }
quit << 0
end
fibonacci(c, quit)
__END__
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quit
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