Use `BTreeMap::from()` instead of using `BTreeMap::new()` with `BTreeMap::insert()`

1 files changed, 5 insertions, 4 deletions

diff --git a/library/alloc/src/collections/btree/map.rs b/library/alloc/src/collections/btree/map.rs
index 2ff7b0fbb75..f771c186e9a 100644
--- a/library/alloc/src/collections/btree/map.rs
+++ b/library/alloc/src/collections/btree/map.rs
@@ -2107,10 +2107,11 @@ impl<K, V> BTreeMap<K, V> {
     /// ```
     /// use std::collections::BTreeMap;
     ///
-    /// let mut map = BTreeMap::new();
-    /// map.insert("a", 1);
-    /// map.insert("b", 2);
-    /// map.insert("c", 3);
+    /// let mut map = BTreeMap::from([
+    ///    ("a", 1),
+    ///    ("b", 2),
+    ///    ("c", 3),
+    /// ]);
     ///
     /// // add 10 to the value if the key isn't "a"
     /// for (key, value) in map.iter_mut() {