Ace the Rust Interview

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intermediate · order 70

Drain without invalidating logic

list-drain-01Related book chapters: 18 (optional — this page is complete on its own)drain

Slug: list-drain-01 · Paired reading: Chapter 18

Prompt

fn splice_out(items: &mut Vec<i32>, start: usize, end: usize) -> Vec<i32> — remove items[start..end] via drain, return the removed values, leave the rest contiguous. Panic-free when start <= end <= len.