Rust Iterators for Beginners | map, filter, fold Explained
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09:19
T
Taught by Celeste AI - AI Coding Coach
View on YouTubeDescription
Master Rust iterators! Learn how to process data efficiently with iter(), map(), filter(), fold(), and more.
š¦ What You'll Learn:
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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
š Key Concepts Covered:
⢠Creating iterators with iter() and into_iter()
⢠Using next() to get elements one by one
⢠map() - transform each element
⢠filter() - keep matching elements
⢠fold() - reduce to a single value
⢠enumerate() - get index with value
⢠take() and skip() - control iteration
š» 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);
š Resources:
⢠Rust Iterator Docs: https://doc.rust-lang.org/std/iter/trait.Iterator.html
⢠Source Code: https://github.com/somaria/yt_gen_ai
š 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