http://www.oxtremists.co.uk/?p=52 Oxford-based tech discussion group. Thu, 05 Nov 2009 22:22:48 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.oxtremists.co.uk/?p=52&cpage=1#comment-8055 The Oxtremists » Blog Archive » Meeting 19 - Working Effectively with Legacy Code Wed, 21 Nov 2007 11:17:46 +0000 http://www.oxtremists.co.uk/?p=52#comment-8055 [...] We moved on to “Programming by Difference” which is mentioned in the book. I didn’t think it was explained quite what it was. Is it simply the practice of putting new code into subclasses of existing ones? Steven pointed out that it is called programming by difference because the new subclass contains the difference between the old code and the new. Tom pointed out that this technique is also mentioned in Refactoring to Patterns. [...] [...] We moved on to “Programming by Difference” which is mentioned in the book. I didn’t think it was explained quite what it was. Is it simply the practice of putting new code into subclasses of existing ones? Steven pointed out that it is called programming by difference because the new subclass contains the difference between the old code and the new. Tom pointed out that this technique is also mentioned in Refactoring to Patterns. [...]

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