go语言中数组与切片的区别

一句话总结：切片是动态数组，注意两者初始化和函数参数的区别

1、初始化的区别

数组： a := [...]int{1,2,3}   a := [3]int{1,2,3}

切片： a:= []int{1,2,3}  a := make([]int, 5) a := make([]int, 5, 10)

2、函数传递

数组是值传递，切片是引用传递

package main

import (

"fmt"

)

func changeArray(a [3]int) {

a[0] = 99

}

func changeSlice(s []int) {

s[0] = 99

}

func main() {

a := [...]int{1, 2, 3}

changeArray(a)

fmt.Println(a)

s := make([]int, 5, 10)

changeSlice(s)

fmt.Println(s)

}

[1 2 3]

[99 0 0 0 0]

成功: 进程退出代码 0.