I have to use a ton of regex in my new job (plz save me), and I use ChatGPT for all of it. My job would be 10x harder if it wasn’t for ChatGPT. It provides extremely detailed examples and warns you of situations where the regex may not perform as expected. Seriously, try it out.

6 points

I have yet to see a regex that is so complicated that I would need some help. I expect programmers to know how to use regexes but it seems that it’s not the case. And when it becomes too big, you always can write verbose regexes with comments, it’s even easier. If someone could show me something too difficult for a human being (excluding the regex to validate emails), I’m interested.

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4 points

It’s often developers who never took a finite automata class who I’ve seen struggle with regular expressions.

It’s kind of like writing code in C while not understanding how memory management works

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2 points

Huh. That class looked hard as hell, I didn’t take it, and now I’m 2 years out of school still googling regex every time I need it.

Maybe I should do some reading 😅

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2 points
*

It was mandatory. I’m glad I took it, but I’m glad it’s over 😂😂😂

Just look up how finite automatas work. You don’t need to understand turing machines or turing completeness

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6 points

It’s not that I’m incapable of evaluating regex, but rather the mental burden of evaluating complex regex statements and determining their purpose can be time-consuming. Why take 20 minutes to understand some regex when ChatGPT can do it in 20 seconds?

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8 points

A coworker once defined regex as a write-only language and he definitely had a point. I love regex but it can be time consuming figuring out exactly what a complex regex expression is doing.

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7 points

Regex isn’t difficult, just annoying to ensure it is bug-free. If ChatGPT can help, then I don’t know why you wouldn’t be in favor of it

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6 points

Thanks for this post, I use regex a often and did not know gpt would be good at this…

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14 points

That’s the problem. It will confidently give you an correct sounding answer.

If it is actually true is a different topic. So don’t just blindly trust it. Verify, or at least sanity check it.

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8 points

This this this!!! I know this is a post from the place that shall not be named, but it just showcases the issues with ChatGPT (this is from when GPT4 was just released)

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24 points

If you think regex is the hard part of programming, then you’re in for a bad time.

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4 points

I often need to deal with half a dozen different programming languages in any day/week and the context switching can be difficult at times. When you’ve spent all day switching between JavaScript, Python, and YAML and suddenly need to draft some Regex, tools like ChatGPT can help immensely at reducing the mental burden of switching gears.

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15 points

The syntax of regular regexes is the same across languages though. It’s just the regex library which is different, but so is every other library between languages.

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1 point

If the project is less than a thousand lines of code in a language with a garbage collector, it probably is. Most other problems don’t require learning a DSL to handle them, and most other DSL’s aren’t nearly as terse.

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83 points

Just make sure to test the regex instead of blindly slapping it in assuming it works 🙂

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8 points

The new Code Interpreter plugin that went live for this week for Plus users can actually execute Python code on a sandboxed environment. This allows you to add “Write and execute tests for the regex” to the end of your prompt.

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15 points
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Regex101 is a sandbox env specifically for Regex

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3 points

This is the way. Everything ChatGPT produces for me gets tested and debugged here.

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5 points
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Not just for writing, and testing samples. It will also explain the parts of the regex.

However it won’t generate examples that will pass the regex - which may be the biggest benefit of chatGPT.

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1 point

This is where I go to validate the work of ChatGPT. The debugging capabilities in that site are wonderful.

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29 points

What if I say “it’s probably okay just this one time” before I do it every time?

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9 points

Ah I’ve tested this method, shit breaks a lot. Still my go to.

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4 points

Can we just have another LLM check the work for us? Like an LLM-GAN?

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5 points
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