Ace the Rust Interview

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beginner · order 15

let-else early return

opt-let-else-01Related book chapters: 2 (optional — this page is complete on its own)let-elseOption

Slug: opt-let-else-01 · Paired reading: Chapter 2

Prompt

fn first_even(nums: &[i32]) -> Option<i32> — use let Some(n) = ... else { return None }; style (or equivalent) to pull the first even value without nested match pyramids.