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110

Stop writing CLI validation. Parse it right the first time. (hackers.pub)

submitted 6 months ago by hongminhee@lemmy.ml to c/programming@programming.dev

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[–] vk6flab@lemmy.radio 2 points 6 months ago (1 children)

I've used the node.js version of argparse, which as I understand it, is a clone of the python implementation and I've not seen how to do mutually exclusive flags. Mind you, at the time I didn't need them, so it wasn't an issue, but I don't recall seeing any way to do it either.

Did I miss something?

[–] azertyfun@sh.itjust.works 3 points 6 months ago

https://docs.python.org/3/library/argparse.html#argparse.ArgumentParser.add_mutually_exclusive_group

However I've never had to use that feature. Like I said it can make sense in specific contexts but it is a pretty strong indicator that you have built in a CLI antipattern or too much complexity.