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());
+ let stringy = Some(String::new());
+ let _ = stringy.unwrap_or(String::new());
let opt = Some(1);
let hello = "Hello";