Talking head
Ruby Conference 2014

This presentation, by Chris Hoffman, is licensed under a Creative Commons Attribution ShareAlike 3.0

Do you know how addition works in Ruby? It's simple right? You just add 2 and 2 and out pops 4. But what if you add 2 to cats? That makes no sense, but how does Ruby know it makes no sense? And what if you had a Really Good Business Reason for adding 2 and cats. To achieve the needed degree of cuteness, you're going to need to be positively cat-like yourself. In this talk you'll learn about the magic of the coerce method, and that can't be coerced into Fixnum isn't a warning, but a dare, and what you can do to make your coworkers, collaborators and future self regret it.

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