clippy::mem_replace_with_default
)]
+use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, LinkedList, VecDeque};
use std::mem;
fn replace_option_with_none() {
fn replace_with_default() {
let mut s = String::from("foo");
let _ = std::mem::replace(&mut s, String::default());
+
let s = &mut String::from("foo");
let _ = std::mem::replace(s, String::default());
let _ = std::mem::replace(s, Default::default());
+
+ let mut v = vec![123];
+ let _ = std::mem::replace(&mut v, Vec::default());
+ let _ = std::mem::replace(&mut v, Default::default());
+ let _ = std::mem::replace(&mut v, Vec::new());
+ let _ = std::mem::replace(&mut v, vec![]);
+
+ let mut hash_map: HashMap<i32, i32> = HashMap::new();
+ let _ = std::mem::replace(&mut hash_map, HashMap::new());
+
+ let mut btree_map: BTreeMap<i32, i32> = BTreeMap::new();
+ let _ = std::mem::replace(&mut btree_map, BTreeMap::new());
+
+ let mut vd: VecDeque<i32> = VecDeque::new();
+ let _ = std::mem::replace(&mut vd, VecDeque::new());
+
+ let mut hash_set: HashSet<&str> = HashSet::new();
+ let _ = std::mem::replace(&mut hash_set, HashSet::new());
+
+ let mut btree_set: BTreeSet<&str> = BTreeSet::new();
+ let _ = std::mem::replace(&mut btree_set, BTreeSet::new());
+
+ let mut list: LinkedList<i32> = LinkedList::new();
+ let _ = std::mem::replace(&mut list, LinkedList::new());
+
+ let mut binary_heap: BinaryHeap<i32> = BinaryHeap::new();
+ let _ = std::mem::replace(&mut binary_heap, BinaryHeap::new());
}
fn main() {