Clone less in 2020/07
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@ -47,9 +47,9 @@ fn read_input() -> String {
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std::fs::read_to_string("input").unwrap()
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}
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fn part1<'a>(bags: &[Bag], color: &str, seen: &'a mut HashSet<String>) -> &'a mut HashSet<String> {
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fn part1<'a, 'b>(bags: &'b [Bag], color: &str, seen: &'a mut HashSet<&'b str>) -> &'a mut HashSet<&'b str> {
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for bag in bags.iter().filter(|bag| bag.contents.iter().any(|b| b.color == color)) {
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seen.insert(bag.color.clone());
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seen.insert(&bag.color);
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part1(bags, &bag.color, seen);
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}
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seen
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