I have a Rust struct T<'a> with Cow<'a, X> fields. I want to create .to_owned version of the struct and embed in another struct with a different lifetime. Lifetime of new struct could be shorter or longer. How do I do that?
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Yeah, I was hoping to abuse `Cow` to allow me to only have to define a single struct type. That's much simpler, as once you have 2 types, you need to express everything in terms of traits. Adds coding overhead. (Although it is arguably better.)
You really don't though. You can express everything in terms of `Cow<'a, Borrowed>` or `T: AsRef<Borrowed>`. It's no different than `String` or `str`.
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Oooh - I haven't learned the `T: AsRef<Borrowed>` trick yet!
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You might have issues depending on whether you can convert a reference of one into a reference of the other, really just depends on what other fields exist.
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