he/him 
Strings are terrible representations for file paths. You end up having to do way more work to process them when you're passing it around. Extracting extensions, basenames, crawling up the directory chain etc.
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I wrote a file path library for Rome where you construct a FilePath instance. It memoizes work, and you use methods to create derivative paths. eg. adding on an extension (useful for module resolution) etc.
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It understands the mutations and can efficiently create a variant with the previous memoized work.
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How does it compare to Python's pathlib?
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No idea! Never used it before.
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I created a similar path library in Reason: One added benefit is that it statically types whether or not a path is relative or absolute. Let’s you make APIs that accept rel, abs, or that will accept either. https://github.com/facebookexperimental/reason-native/blob/master/src/path/README.md …
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Omg I love it, stealing some of this API. Thanks for the link!
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this sounds very much like how we do Swift stuff where I work. Except we did some operator overload to make the + operators automatically convert to "/" in paths.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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