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#! /usr/local/bin/ruby
require "thread"
require "observer"
class Tick
include Observable
def initialize
Thread.start do
while TRUE
sleep 0.999
changed
notify_observers(Time.now.strftime("%H:%M:%S"))
end
end
end
end
class Clock
def initialize
@tick = Tick.new
@tick.add_observer(self)
end
def update(time)
print "\e[8D", time
STDOUT.flush
end
end
clock = Clock.new
sleep
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