| From: Mark Engelberg (mark.engelberg at gmail.com) Date: Sun Aug 22 23:14:40 EDT 2010 |
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I don't know how DrRacket is implemented, but you might want to look at this article for ideas about ways to represent strings in a manner that allows for efficient editing: http://www.cs.ubc.ca/local/reading/proceedings/spe91-95/spe/vol25/issue12/spe986.pdf
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