Rust Iterators for Beginners | map, filter, fold Explained

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Taught by Celeste AI - AI Coding Coach
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Master Rust iterators! Learn how to process data efficiently with iter(), map(), filter(), fold(), and more. ๐Ÿฆ€ What You'll Learn: โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” 00:00 - Introduction 00:30 - Iterator Basics (iter, next, for loops) 03:30 - Transform Methods (map, filter, collect) 06:30 - Advanced Iterators (fold, enumerate, take, skip) 08:30 - Recap & What's Next ๐Ÿ“š Key Concepts Covered: โ€ข Creating iterators with iter() and into_iter() โ€ข Using next() to get elements one by one โ€ข map() - transform each element โ€ข filter() - keep matching elements โ€ข fold() - reduce to a single value โ€ข enumerate() - get index with value โ€ข take() and skip() - control iteration ๐Ÿ’ป Code Examples: Iterator basics: let mut iter = numbers.iter(); println!("{:?}", iter.next()); // Some(1) Map and filter: let doubled: Vec of i32 = numbers .iter() .map(|x| x * 2) .collect(); Fold to sum: let sum = numbers.iter().fold(0, |acc, x| acc + x); ๐Ÿ”— Resources: โ€ข Rust Iterator Docs: https://doc.rust-lang.org/std/iter/trait.Iterator.html โ€ข Source Code: https://github.com/somaria/yt_gen_ai ๐Ÿ‘ Like & Subscribe for more Rust tutorials! #Rust #RustLang #Programming #Iterators #CodingTutorial #LearnRust #FunctionalProgramming #map #filter #fold
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Duration

9:19

Published

December 23, 2025

Added to Codegiz

March 15, 2026

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