1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
#![feature(test)]
extern crate test;
mod map {
use std::collections::{BTreeMap, HashMap};
use test::Bencher;
use phf::phf_map;
macro_rules! map_and_match {
($map:ident, $f:ident, $($key:expr => $value:expr,)+) => {
static $map: phf::Map<&'static str, usize> = phf_map! {
$($key => $value),+
};
fn $f(key: &str) -> Option<usize> {
match key {
$($key => Some($value),)+
_ => None
}
}
}
}
map_and_match! { MAP, match_get,
"apple" => 0,
"banana" => 1,
"carrot" => 2,
"doughnut" => 3,
"eggplant" => 4,
"frankincene" => 5,
"grapes" => 6,
"haggis" => 7,
"ice cream" => 8,
"jelly beans" => 9,
"kaffir lime leaves" => 10,
"lemonade" => 11,
"mashmallows" => 12,
"nectarines" => 13,
"oranges" => 14,
"pineapples" => 15,
"quinoa" => 16,
"rosemary" => 17,
"sourdough" => 18,
"tomatoes" => 19,
"unleavened bread" => 20,
"vanilla" => 21,
"watermelon" => 22,
"xinomavro grapes" => 23,
"yogurt" => 24,
"zucchini" => 25,
}
#[bench]
fn bench_match_some(b: &mut Bencher) {
b.iter(|| {
assert_eq!(match_get("zucchini").unwrap(), 25);
})
}
#[bench]
fn bench_match_none(b: &mut Bencher) {
b.iter(|| {
assert_eq!(match_get("potato"), None);
})
}
#[bench]
fn bench_btreemap_some(b: &mut Bencher) {
let mut map = BTreeMap::new();
for (key, value) in MAP.entries() {
map.insert(*key, *value);
}
b.iter(|| {
assert_eq!(map.get("zucchini").unwrap(), &25);
})
}
#[bench]
fn bench_hashmap_some(b: &mut Bencher) {
let mut map = HashMap::new();
for (key, value) in MAP.entries() {
map.insert(*key, *value);
}
b.iter(|| {
assert_eq!(map.get("zucchini").unwrap(), &25);
})
}
#[bench]
fn bench_phf_some(b: &mut Bencher) {
b.iter(|| {
assert_eq!(MAP.get("zucchini").unwrap(), &25);
})
}
#[bench]
fn bench_btreemap_none(b: &mut Bencher) {
let mut map = BTreeMap::new();
for (key, value) in MAP.entries() {
map.insert(*key, *value);
}
b.iter(|| {
assert_eq!(map.get("potato"), None);
})
}
#[bench]
fn bench_hashmap_none(b: &mut Bencher) {
let mut map = HashMap::new();
for (key, value) in MAP.entries() {
map.insert(*key, *value);
}
b.iter(|| {
assert_eq!(map.get("potato"), None);
})
}
#[bench]
fn bench_phf_none(b: &mut Bencher) {
b.iter(|| {
assert_eq!(MAP.get("potato"), None);
})
}
}
|
