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Use more functional programming in ArenaMap::insert

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I find this more readable and it flattens out the body a little.
This commit is contained in:
kjeremy 2020-03-30 16:15:28 -04:00
parent 6f0d8db529
commit c39725212c
1 changed files with 3 additions and 5 deletions
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8
crates/ra_arena/src/map.rs
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@ -17,11 +17,9 @@ impl<T, V> ArenaMap<Idx<T>, V> {
if self.v.capacity() <= idx { if self.v.capacity() <= idx {
self.v.reserve(idx + 1 - self.v.capacity()); self.v.reserve(idx + 1 - self.v.capacity());
} }
if self.v.len() <= idx {
while self.v.len() <= idx { let fill = (idx + 1).saturating_sub(self.v.len());
self.v.push(None); self.v.extend(std::iter::repeat_with(|| None).take(fill));
}
}
self.v[idx] = Some(t); self.v[idx] = Some(t);
} }