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This article describes a Visual Basic .NET implementation of a diff algorithm, used to compare two text streams or similar lists of objects, and produce an "edit script" which explains how to get from the old to the current by deleting, inserting, or copying lines. Instead of just re-implementing the classic C algorithm, this version exploits the power of VB.NET to keep the code simple, and uses a couple of novel tricks to reduce the amount of processing required, improving the execution speed.
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