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Lessons learnedExperience excerpt · English

ChatGPT: It was early on in my career as a software developer, and I was working on a web …

… ChatGPT: It was early on in my career as a software developer, and I was working on a web application that was designed to allow users to upload images and apply filters to them. One day, a user reported a strange issue where some of the filters were producing unexpected results. Specifically, they were seeing images that appeared to be completely random and unrelated to the original image. At first, I assumed it was a problem with the filter algorithms, but as I dug deeper, I realized that the issue was actually caused by a very strange bug. It turned out that the user's browser was caching a previously uploaded image and reusing it for subsequent filter operations, even if the user had selected a completely different image. This led to some very bizarre and unexpected results, as the filter algorithms were being applied to an entirely different image than what the user intended. To fix the bug, I had to implement a workaround that forced the browser to always load the most recent version of the image from the server, rather than relying on its cache. …

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EP

> "What's the weirdest bug you debugged? What made it weird?" If you can remember, 5-10 years after you solved it.

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JF

The C++ experts here will be able to confirm, but if my memory serves, I think the story about virtual destructors doesn't make sense: > Specifically, the class had a virtual destructor, but the derived class failed to declare its own destructor as virtual. The derived class doesn't have to declare its destructor as virtual. What matters is that the base class does so. > This led to undefined behavior when deleting objects of the derived class, which in turn caused the program to crash. No; the undefined-behavior case arises if the base class destructor is not declared as virtual, and you then try to delete a derived class via a pointer-to-base.[1] So this is a nice example of ChatGPT producing something that looks plausible, yet on examination, betrays the fact that it has no actual "understanding" of the topic. [1] https://en.cppreference.com/w/cpp/language/destructor

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AR

I know it's well-known and because it's a statistical model, but I like how ChatGPT basically fills in a Mad Lib with these replies. > ChatGPT: I was working on a [project] that [description]. > One day, a user reported a strange issue where [issue description]. At first, I assumed it was a problem with the [feature], but as i dug deeper, I realized that the issue was actually caused by a very strange bug. > It turned out that [bug cause]. This led to [problem]. > To fix the bug, I had to [solution]. It was definitely one of the weirdest bugs I've ever encountered, and it taught me the importance of [lesson]. Third example deviates from this template a bit but still has the key components ("strange issue", "To fix the issue, I had to" "It was definitely one of the weirdest bugs I've ever encountered, and it taught me the importance of")

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