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Today I want to talk about the need for better tools to work with self-referential structs, and also (safe) alternatives that alleviate that need for certain use-cases. Lets start by giving a very concrete example of what I want to achieve. I want to get the nth line of a string quickly . The idiomatic way to do it would be string.lines().nth(nth) , and it can hardly get any simpler than that. The…
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