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Rust Master Class Chapter 7: Closures, Iterators, and Lifetimes Explained

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A new educational chapter on Rust programming covers three core language features: closures, iterators, and lifetimes. Closures are anonymous functions capable of capturing variables from their surrounding scope, and are commonly constrained by traits such as Fn, FnMut, or FnOnce. Iterators follow a lazy evaluation model, processing sequences of items only when consumed by methods like sum(), find(), or any(). Lifetimes are a form of generics that help the compiler validate reference relationships and prevent dangling pointers. Together, these three mechanisms underpin Rust's memory safety guarantees and support for fearless concurrency.

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