Ace the Rust Interview

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beginner · order 48

flatten nested Options

opt-flatten-01Related book chapters: 2 (optional — this page is complete on its own)Optionflatten

Slug: opt-flatten-01 · Paired reading: Chapter 2

Prompt

fn flatten_path(p: Option<Option<i32>>) -> Option<i32> — use Option::flatten (or and_then(std::convert::identity)).