uint8 arrays

# Node.js

const array = new Uint8Array(10);
console.log(array);

const offset = 1;

array.set([1, 2, 3], offset);
console.log(array);

const sub = array.subarray(2);
console.log(sub);

const sub2 = array.subarray(2, 4);
console.log(sub2);

console.log(array);
const value = 9;
const start = 5;
const end = 10;
array.fill(value, start, end);
console.log(array);

console.log(array.byteLength);

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

Output

Uint8Array [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
Uint8Array [ 0, 1, 2, 3, 0, 0, 0, 0, 0, 0 ]
Uint8Array [ 2, 3, 0, 0, 0, 0, 0, 0 ]
Uint8Array [ 2, 3 ]
Uint8Array [ 0, 1, 2, 3, 0, 0, 0, 0, 0, 0 ]
Uint8Array [ 0, 1, 2, 3, 0, 9, 9, 9, 9, 9 ]
10

1
2
3
4
5
6
7

# Go

package main

import "fmt"

func main() {
	array := make([]uint8, 10)
	fmt.Println(array)

	offset := 1

	copy(array[offset:], []uint8{1, 2, 3})
	fmt.Println(array)

	sub := array[2:]
	fmt.Println(sub)

	sub2 := array[2:4]
	fmt.Println(sub2)

	fmt.Println(array)
	value := uint8(9)
	start := 5
	end := 10
	for i := start; i < end; i++ {
		array[i] = value
	}
	fmt.Println(array)

	fmt.Println(len(array))
}

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

Output

[0 0 0 0 0 0 0 0 0 0]
[0 1 2 3 0 0 0 0 0 0]
[2 3 0 0 0 0 0 0]
[2 3]
[0 1 2 3 0 0 0 0 0 0]
[0 1 2 3 0 9 9 9 9 9]
10

1
2
3
4
5
6
7

编辑

#Go #Node.js

上次更新: 2022/09/30, 11:34:22

← arrays array iteration→