If you're planning #rustlang adoption
know that failure is never an `Option<_>`
but a `Result<_, _>` – perhaps
your code might collapse
if you any corrective ops shun.
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Not at all. I'm against using Option::None to signal errors.
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If you don't have a better error to report, it'll do.
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Nobody has any intention of building a option::NullPointerException
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