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Appreciation post: Solved why my list kept showing one less item
I was writing a script to count items in a list. Every time I ran it, the count was off by one. I looked at my loop and realized I started at zero instead of one. After fixing the start index, the numbers matched up. It was a simple mistake, but figuring it out felt really satisfying. Now I double-check my indexes before running code. Small wins like this keep me going with learning.
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the_john7mo ago
On some forum last year, I saw a post where someone spent hours debugging an off-by-one error... @jason_knight is right, these things are everywhere. I always triple-check my loops now.
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ray_mason7mo ago
Glad you figured it out, those little fixes can be really rewarding. In my experience, off-by-one errors often come from mixing up zero-based and one-based indexing, so sometimes starting at zero is actually the right call. Your mileage may vary depending on the language you're using. @jason_knight is right that these errors are super common, and they trip up everyone from beginners to pros. I always try to write out my loop conditions on paper before coding, which helps me catch mistakes early.
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the_felix7mo ago
Oh man, off-by-one errors are my personal nemesis. I once spent a whole afternoon because I used "less than or equal to" instead of just "less than." The victory dance when I finally spotted it was ridiculous.
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