let mut map = HashMap::<u64, String>::new();
map.entry(42).or_insert(String::new());
+ let mut map_vec = HashMap::<u64, Vec<i32>>::new();
+ map_vec.entry(42).or_insert(vec![]);
+
let mut btree = BTreeMap::<u64, String>::new();
btree.entry(42).or_insert(String::new());
+ let mut btree_vec = BTreeMap::<u64, Vec<i32>>::new();
+ btree_vec.entry(42).or_insert(vec![]);
+
let stringy = Some(String::from(""));
let _ = stringy.unwrap_or("".to_owned());