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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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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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It understands the mutations and can efficiently create a variant with the previous memoized work.
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I understand the sentiment, but disagree with the proposed solution. A string is the purest representation of a file path. It is human readable, stateless and can be processed using pure functions. Don't abstract it; build better utilities.
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I don't really understand. Pure representations aren't the most efficient. I'm talking about code that processes file paths. Unclear how you can create better utilities if the input type is not efficiently cachable.
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also paths are not necessarily utf8, rust uses special OsString for that https://doc.rust-lang.org/std/ffi/struct.OsString.html …
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what’s a good representation? did you find noteworthy libs? Dart’s path lib has documented rationale on Path objects vs Strings that I found interestinghttps://pub.dev/packages/path
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This is so true it's painful. I wish modern file systems used non-C arrays of segments (all names legal) and stored file types as MIME types. It's hardly any overhead (256 worst-case per spec). I ought to write up a blog post of what I wish file systems were like at some point.
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Paths are just paths into tree modes. Now if OS devs would maybe quit trying to make them look so much like names, creating arbitrary restrictions and conventions because they can't process them as pure string names internally, it'd be way easier to manage them.
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