Println("Slice 2:", slice2) // 复制切片 slice3 := make([]int, len(slice2)) copy(slice3, slice2) fmt.Println("Slice 3:", slice3) // 获取切片长度和容量 fmt.Println("Length of Slice 3:", len(slice3)) fmt.Println("Capacity of Slice 3:", cap(slice3)) } //Slice 1: [1 ...
// Golang program to find the length of a slicepackagemainimport"fmt"funcmain() {//Create an integer arrayarr:=[10]int{10,20,30,40,50,60,70,80,90,100}//create slice of from index 2 till index 4(5-1).intSlice:=arr[2:5] fmt.Println("Integer slice: ", intSlice) fmt.Println...
6,7,8,9}fmt.Println("Original slice before:",originalSlice)// 使用全切片表达式创建新的切片,其中 max 和 high 相等newSlice:=originalSlice[3:5:5]// low=3, high=5, max=5// 打印newSlice的信息fmt.Println("New slice initially:",newSlice)fmt.Println("Length of newSlice:",len(newSlice))...
运行结果是:length of slice 1 capacity 4 append 追加数据到切片上 1package main23import"fmt"45func main() {6a := [...]string{"a","b","c","d","e"}7b := a[1:2]8fmt.Printf("length of slice %d capacity %d\n", len(b), cap(b))//length is 1 and capacity is 49b = appen...
让我们写一些代码来更好地理解这一点。 package main import ("fmt") func main() { fruitarray := [...]string{"apple","orange","grape","mango","water melon","pine apple","chikoo"} fruitslice := fruitarray[1:3] fmt.Printf("length of slice %d capacity %d"...
切片slice:切片是对数组的抽象。切片在内存中占24个字节 runtime.hstruct Slice{ // must not move anything byte* array; // actual data uintgo len; // number of elements uintgo cap; // allocated number of elements}; 切片包含长度、容量、以及一个指向首元素的指针 ...
// Assume the length of the slice is so large // that its elements must be allocated on heap. bs := make([]byte, 1 << 31) // 编译器机智地提前回收 // A smart compiler can detect that the // underlying part of the slice bs will never be ...
s:=[]int{1,2,3}element:=s[3]// panic: runtime error: index out of range [3] with length 3 3.append()返回值 append()函数可能改变原切片的地址,因此应始终使用其返回值: 代码语言:javascript 复制 s:=[]int{1,2,3}s=append(s,4)// 必须使用append的返回值,否则可能丢失新添加的元素 ...
var slice_01 []type = make([]type, len) 或为 slice_01 := make([]type, len) 在切片的make声明和初始话的方式中;也可以指定容量, 比如 make([]T, length, capacity) 其中capacity为可选参数。通过上面的方式就可以声明和初始话一个容量大小为capacity,当前长度为length的切片,切片的用法如何使用过pyth...
s := make([]int,0) // unsafe.Pointer ——> *slice s2 := make([]int, 0) fmt.Printf("%p\n", s2) // 0x126c9 所以nil切片直接赋值是要报错的 代码语言:javascript 复制 var s []int s[0] = 1 // panic: runtime error: index out of range [0] with length 0 5、切片中添加元素...