33 lines
352 B
Ruby
33 lines
352 B
Ruby
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class Drill
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attr_reader :channel
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def initialize(channel)
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@channel = channel
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@started = false
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end
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def start!
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@started = true
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end
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def started?
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@started
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end
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def exists?
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true
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end
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class Empty < Drill
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def initialize
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super(nil)
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end
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def start!; end
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def exists?
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false
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end
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end
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end
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