Specifically, a variable's lifetime begins when it is created.

Weba lifetime is a construct the compiler (or more specifically, its borrow checker) uses to ensure all borrows are valid.

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Webthe implicit lifetime tells rust to figure out the lifetime itself.

Webthe guide delves into lifetime annotations in functions and structs, multiple lifetime parameters, lifetime elision rules, and the special 'static lifetime.

There are three places where this lifetime is useful:

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When consuming/returning a type that.

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