golang slice

package main
import "fmt"

func main() {
	var arr1_ [8]int
	var slice1_ []int = arr1_[0:5] // item at index 5 not included!
	var slice2_ []int = arr1_[0:4]
	arr1_[2] = 4
	fmt.Println(slice1_[2])
	fmt.Println(slice2_[2])
	slice1_[2] = 5
	fmt.Println(arr1_[2])
	fmt.Println(slice2_[2])
	slice2_[2] = 6
	fmt.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] = 8
	fmt.Println(arr1_[2])
	fmt.Println(slice1_[2])

fmt.Println("")

	var arr1 [8]int
	var slice1 []int = arr1[1:5] // item at index 5 not included!
	var slice2 []int = arr1[1:4]
	arr1[3] = 4
	fmt.Println(slice1[2])
	fmt.Println(slice2[2])
	slice1[2] = 5
	fmt.Println(arr1[3])
	fmt.Println(slice2[2])
	slice2[2] = 6
	fmt.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] = 8
	fmt.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 5
	for _,v :=range a{
		fmt.Println(v)
	}
	a = a[0:4]		// ref of subarray {5,8} - len(a) is Now 4 but cap(a) is still 5
	for _,v :=range a{
		fmt.Println(v)
	}
}

原文地址：https://www.jb51.cc/go/188260.html