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Answers and rating deltas for

In Smalltalk, if x is an array, and x at: 3 put: 123 will work, then how can (x at: 3) + 1 work?

Author Votes Δ
Peter Uhnak 6 +3.48
Bob Jarvis - Слава Україні 5 +0.21
John Pfersich 1 -3.84
Last visited: Mar 17, 2016, 11:14:29 AM