key_mutex/
empty.rs

1use std::{
2    collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, LinkedList, VecDeque},
3    hash::Hash,
4    rc::Rc,
5    sync::Arc,
6};
7
8use dashmap::{DashMap, DashSet};
9
10pub trait Empty {
11    fn is_empty(&self) -> bool;
12}
13
14impl<T: Empty> Empty for Box<T> {
15    fn is_empty(&self) -> bool {
16        self.as_ref().is_empty()
17    }
18}
19
20impl<T: Empty> Empty for Rc<T> {
21    fn is_empty(&self) -> bool {
22        self.as_ref().is_empty()
23    }
24}
25
26impl<T: Empty> Empty for Arc<T> {
27    fn is_empty(&self) -> bool {
28        self.as_ref().is_empty()
29    }
30}
31
32impl Empty for () {
33    fn is_empty(&self) -> bool {
34        true
35    }
36}
37
38impl<V> Empty for Option<V> {
39    fn is_empty(&self) -> bool {
40        self.is_none()
41    }
42}
43
44impl<V> Empty for Vec<V> {
45    fn is_empty(&self) -> bool {
46        Vec::is_empty(self)
47    }
48}
49
50impl<V> Empty for VecDeque<V> {
51    fn is_empty(&self) -> bool {
52        VecDeque::is_empty(self)
53    }
54}
55
56impl<V> Empty for LinkedList<V> {
57    fn is_empty(&self) -> bool {
58        LinkedList::is_empty(self)
59    }
60}
61
62impl<V> Empty for BinaryHeap<V> {
63    fn is_empty(&self) -> bool {
64        BinaryHeap::is_empty(self)
65    }
66}
67
68impl<K, V> Empty for BTreeMap<K, V> {
69    fn is_empty(&self) -> bool {
70        BTreeMap::is_empty(self)
71    }
72}
73
74impl<V> Empty for BTreeSet<V> {
75    fn is_empty(&self) -> bool {
76        BTreeSet::is_empty(self)
77    }
78}
79
80impl<K, V> Empty for HashMap<K, V> {
81    fn is_empty(&self) -> bool {
82        HashMap::is_empty(self)
83    }
84}
85
86impl<V> Empty for HashSet<V> {
87    fn is_empty(&self) -> bool {
88        HashSet::is_empty(self)
89    }
90}
91
92impl<K: Eq + Hash, V> Empty for DashMap<K, V> {
93    fn is_empty(&self) -> bool {
94        DashMap::is_empty(self)
95    }
96}
97
98impl<K: Eq + Hash> Empty for DashSet<K> {
99    fn is_empty(&self) -> bool {
100        DashSet::is_empty(self)
101    }
102}
key_mutex/empty.rs

key_mutex/
empty.rs
