In my quest to provide something everybody already has, I present to you List, a simple Linked List implementation in Ruby. You can get it here, if you really want to. This is my first experiment in test driven development, and it definitely produced many more tests than any other code I’ve written. We’re talking 8 tests for 2 classes, some 13 or 14 tests. It worked pretty well, but I don’t know if I’ll do it again. Maybe I won’t need to.

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