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![Objects, Mutability, and the Mysterious Case of Hash.new([]) — Ellen Cornelius](https://images.squarespace-cdn.com/content/v1/5ab72791266c0754d1c93fd3/1574535495453-RVGEIP9YOQFTBSO0WT6N/Screen+Shot+2019-11-23+at+11.54.42+AM.png "Objects, Mutability, and the Mysterious Case of Hash.new([]) — Ellen Cornelius")
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