18 lines
375 B
Ruby
18 lines
375 B
Ruby
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# This file contains the Ruby code from book of
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# "Data Structures and Algorithms
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# with Object-Oriented Design Patterns in Ruby"
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# by Bruno R. Preiss.
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#
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# Copyright (c) 2004 by Bruno R. Preiss, P.Eng. All rights reserved.
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class Cursor < AbstractObject
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abstractmethod :datum
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abstractmethod :insertAfter
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abstractmethod :insertBefore
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abstractmethod :withdraw
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end
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