golang slice

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package mainimport "fmt"func main() {var arr1_ [8]intvar slice1_ []int = arr1_[0:5] // item at index 5 not included!var slice2_ []int = arr1_[0:4]arr1_[2] = 4fmt.Println(slice1_[2])fmt.Println(slice2_[2])slice1_[2] = 5fmt.Println(arr1_[2])fmt.Println(slice2_[2])slice2_[2] = 6fmt.Println(arr1_[2])fmt.Println(slice1_[2])for i:=0;i<4;i++{//当大于等于5时，就会脱离arr1数组，因为重新分配的它关联的数组。        slice2_=append(slice2_,1);}slice2_[2] = 8fmt.Println(arr1_[2])fmt.Println(slice1_[2])fmt.Println("")var arr1 [8]intvar slice1 []int = arr1[1:5] // item at index 5 not included!var slice2 []int = arr1[1:4]arr1[3] = 4fmt.Println(slice1[2])fmt.Println(slice2[2])slice1[2] = 5fmt.Println(arr1[3])fmt.Println(slice2[2])slice2[2] = 6fmt.Println(arr1[3])fmt.Println(slice1[2])for i:=0;i<5;i++{//当大于等于5时，就会脱离arr1数组，因为重新分配的它关联的数组。        slice2=append(slice2,1);}slice2[2] = 8fmt.Println(arr1[3])fmt.Println(slice1[2])fmt.Println("")var ar = [10]int{0,1,2,3,4,5,6,7,8,9}var a = ar[5:7] // reference to subarray {5,6} - len(a) is 2 and cap(a) is 5for _,v :=range a{fmt.Println(v)}a = a[0:4]// ref of subarray {5,6,7,8} - len(a) is now 4 but cap(a) is still 5for _,v :=range a{fmt.Println(v)}}
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