163: Donald Knuth
Title text: His books were kinda intimidating; rappelling down through his skylight seemed like the best option.
An array in computer science is a structure that stores multiple values in a fixed order, and the elements are accessed by their index number. In Pascal, for instance, one writes array to access the first element in the array. Most "modern" (read: descended from C) languages use 0 as the index for the first element in the array, but it is possible (if one is careful about it) to ignore the 0th element and use 1 as the first index. Cueball is complaining that Black Hat was not consistent in his choice of where to start his arrays. This is a valid complaint, as a lack of such consistency can make coding errors both more likely and less easy to detect.
Black Hat's cites Donald Knuth to support his rebuttal, but the quote he uses does not seem relevant. It turns out that Black Hat had illegally entered the professor's house in order to question him on indices. Donald Knuth's words were not an intellectual response to the question, but rather an alarmed response to the presence of an intruder. It is not clear if Black Hat is aware of this.
The title text suggests that Black Hat finds Donald's reputation intimidating, and he decided that the best way to overcome his fears was by making a bold entrance.
- [Black Hat and Cueball are sitting back to back at two separate desks, typing.]
- Cueball: Man, you're being inconsistent with your array indices. Some are from one, some are from zero.
- Black Hat: Different tasks call for different conventions. To quote Stanford algorithm's expert Donald Knuth, "Who are you? How did you get in my house?"
- Cueball: Wait, what?
- Black Hat: Well, that's what he said when I asked him about it.
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