From 7ca5ef67e89241065d328445ed7d361270f4b9de Mon Sep 17 00:00:00 2001
From: kjeremy <kjeremy@gmail.com>
Date: Tue, 31 Mar 2020 09:02:12 -0400
Subject: Use resize_with

---
 crates/ra_arena/src/map.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'crates/ra_arena/src')

diff --git a/crates/ra_arena/src/map.rs b/crates/ra_arena/src/map.rs
index e4ddbad42..0f33907c0 100644
--- a/crates/ra_arena/src/map.rs
+++ b/crates/ra_arena/src/map.rs
@@ -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);
     }
 
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