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Remove cloning in generic_damerau_levenshtein #75

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Remove cloning in generic_damerau_levenshtein #75

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6 changes: 3 additions & 3 deletions src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -352,7 +352,7 @@ fn flat_index(i: usize, j: usize, width: usize) -> usize {
/// ```
pub fn generic_damerau_levenshtein<Elem>(a_elems: &[Elem], b_elems: &[Elem]) -> usize
where
Elem: Eq + Hash + Clone,
Elem: Eq + Hash,
{
let a_len = a_elems.len();
let b_len = b_elems.len();
Expand All @@ -379,7 +379,7 @@ where
distances[flat_index(1, j + 1, width)] = j;
}

let mut elems: HashMap<Elem, usize> = HashMap::with_capacity(64);
let mut elems: HashMap<&Elem, usize> = HashMap::with_capacity(64);

for i in 1..(a_len + 1) {
let mut db = 0;
Expand Down Expand Up @@ -407,7 +407,7 @@ where
);
}

elems.insert(a_elems[i - 1].clone(), i);
elems.insert(&a_elems[i - 1], i);
}

distances[flat_index(a_len + 1, b_len + 1, width)]
Expand Down