Created
September 23, 2012 00:30
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observer
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require 'observer' | |
class Target | |
include Observable | |
end | |
class Watcher | |
def initialize target | |
target.add_observer self | |
end | |
def update *args | |
puts args.inspect | |
end | |
end | |
target = Target.new | |
watcher = Watcher.new(target) | |
target.notify_observers "foo" |
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