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Use resize_with

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This commit is contained in:
kjeremy 2020-03-31 09:02:12 -04:00
parent f633f69e36
commit 7ca5ef67e8
1 changed files with 1 additions and 2 deletions
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3
crates/ra_arena/src/map.rs
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@ -15,8 +15,7 @@ impl<T, V> ArenaMap<Idx<T>, V> {
pub fn insert(&mut self, id: Idx<T>, t: V) {
let idx = Self::to_idx(id);
let fill = (idx + 1).saturating_sub(self.v.len());
self.v.extend(std::iter::repeat_with(|| None).take(fill));
self.v.resize_with((idx + 1).max(self.v.len()), || None);
self.v[idx] = Some(t);
}