mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-21 07:01:54 +00:00
59 lines
1.9 KiB
Rust
59 lines
1.9 KiB
Rust
// run-rustfix
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#![allow(unused_imports)]
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#![warn(
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clippy::all,
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clippy::style,
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clippy::mem_replace_option_with_none,
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clippy::mem_replace_with_default
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)]
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use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, LinkedList, VecDeque};
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use std::mem;
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fn replace_option_with_none() {
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let mut an_option = Some(1);
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let _ = mem::replace(&mut an_option, None);
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let an_option = &mut Some(1);
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let _ = mem::replace(an_option, None);
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}
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fn replace_with_default() {
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let mut s = String::from("foo");
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let _ = std::mem::replace(&mut s, String::default());
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let s = &mut String::from("foo");
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let _ = std::mem::replace(s, String::default());
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let _ = std::mem::replace(s, Default::default());
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let mut v = vec![123];
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let _ = std::mem::replace(&mut v, Vec::default());
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let _ = std::mem::replace(&mut v, Default::default());
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let _ = std::mem::replace(&mut v, Vec::new());
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let _ = std::mem::replace(&mut v, vec![]);
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let mut hash_map: HashMap<i32, i32> = HashMap::new();
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let _ = std::mem::replace(&mut hash_map, HashMap::new());
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let mut btree_map: BTreeMap<i32, i32> = BTreeMap::new();
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let _ = std::mem::replace(&mut btree_map, BTreeMap::new());
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let mut vd: VecDeque<i32> = VecDeque::new();
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let _ = std::mem::replace(&mut vd, VecDeque::new());
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let mut hash_set: HashSet<&str> = HashSet::new();
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let _ = std::mem::replace(&mut hash_set, HashSet::new());
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let mut btree_set: BTreeSet<&str> = BTreeSet::new();
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let _ = std::mem::replace(&mut btree_set, BTreeSet::new());
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let mut list: LinkedList<i32> = LinkedList::new();
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let _ = std::mem::replace(&mut list, LinkedList::new());
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let mut binary_heap: BinaryHeap<i32> = BinaryHeap::new();
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let _ = std::mem::replace(&mut binary_heap, BinaryHeap::new());
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}
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fn main() {
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replace_option_with_none();
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replace_with_default();
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}
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