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A comment on Show HN: NSString + Ruby.

Re:Show HN: NSString + Ruby by pdenya on Thursday October 10, 2013 @05:18PM (#6530102)
Very impressive. I didn't know about objectAtIndexedSubscript and objectForKeyedSubscript so I wouldn't have thought this was possible as a category.
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Re:Show HN: NSString + Ruby by fleitz on Thursday October 10, 2013 @06:35PM (#6530460)
Almost everything is possible via a category though a lot of it involves hackery with objc/runtime.h
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