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• The Brilliance of “nil” in Objective-C https://collindonnell.com/2022/04/28/the-brilliance-of-nil-in-objective-c/ 151 comments 29/4/2022
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• The Xerox Smalltalk-80 GUI Was Weird https://collindonnell.com/the-xerox-smalltalk-80-gui-was-weird 8 comments 3/7/2023 design , historical