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What are the most common mistakes you make as a programmer?

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We all make mistakes from time to time. Most of the times we learn from it, to avoid making it again in the future.

But in some cases, we just can't learn the lesson, and we keep making the same stupid mistakes over and over again.

For you, what are those mistakes you keep making, be that typo, not calling a function or anything else.

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Forgetting basic syntax, especially for conditionals. I jump between languages quite regularly, and it's pretty normal for me to do things like forget colons in Python or semicolons in JS. About 90% of the time I run into a syntax error or odd behavior caused by incorrect syntax, it's a case like this where I forgot literally a single character.

 

I forget to call my functions all the time. ALL THE TIME

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