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
|
'use strict';
const common = require('../common.js');
const bench = common.createBenchmark(main, {
method: ['for', 'for-of', 'for-in', 'forEach'],
count: [5, 10, 20, 100],
millions: [5]
});
function useFor(n, items, count) {
var i, j;
bench.start();
for (i = 0; i < n; i++) {
for (j = 0; j < count; j++) {
/* eslint-disable no-unused-vars */
const item = items[j];
/* esline-enable no-unused-vars */
}
}
bench.end(n / 1e6);
}
function useForOf(n, items) {
var i, item;
bench.start();
for (i = 0; i < n; i++) {
for (item of items) {}
}
bench.end(n / 1e6);
}
function useForIn(n, items) {
var i, j, item;
bench.start();
for (i = 0; i < n; i++) {
for (j in items) {
/* eslint-disable no-unused-vars */
item = items[j];
/* esline-enable no-unused-vars */
}
}
bench.end(n / 1e6);
}
function useForEach(n, items) {
var i;
bench.start();
for (i = 0; i < n; i++) {
items.forEach((item) => {});
}
bench.end(n / 1e6);
}
function main(conf) {
const n = +conf.millions * 1e6;
const count = +conf.count;
const items = new Array(count);
var i;
var fn;
for (i = 0; i < count; i++)
items[i] = i;
switch (conf.method) {
case 'for':
fn = useFor;
break;
case 'for-of':
fn = useForOf;
break;
case 'for-in':
fn = useForIn;
break;
case 'forEach':
fn = useForEach;
break;
default:
throw new Error('Unexpected method');
}
fn(n, items, count);
}
|