/*创建切片*/numbers := []int {1,2,3,4,5,6,7,8,9,0}printSlice(numbers)/*打印原始切片*/fmt.Println("numbers ==" , numbers)/*打印子切片 从索引1到索引4（不包含1和4）*/fmt.Println("numbers[1~4] ==",numbers[1:4])
package mainimport "fmt"func main() {var numbers []intprintSlice(numbers)if(numbers == nil){fmt.Printf("切片是空的")}}func printSlice(x []int){fmt.Printf("len=%d cap=%d slice=%v\n",len(x),cap(x),x)}
/*默认下限为0*/fmt.Println("numbers[:3] == ",numbers[:3])/*默认上限为len（s）*/fmt.Println("numbers{0:}==",numbers[0:])numbers1 := make([]int ,0,5)printSlice(numbers1)}func printSlice (x []int) {fmt.Printf("len=%d cap=%d slice=%v\n" , len(x),cap(x),x)
package mainimport "fmt"func main() {var numbers []intprintSlice(numbers)/* 允许追加空切片 */numbers = append(numbers, 0)printSlice(numbers)/* 向切片添加一个元素 */numbers = append(numbers, 1)printSlice(numbers)/* 同时添加多个元素 */numbers = append(numbers, 2,3,4)printSlice(numbers)/* 创建切片 numbers1 是之前切片的两倍容量*/numbers1 := make([]int, len(numbers), (cap(numbers))*2)/* 拷贝 numbers 的内容到 numbers1 */copy(numbers1,numbers)printSlice(numbers1) }func printSlice(x []int){fmt.Printf("len=%d cap=%d slice=%v\n",len(x),cap(x),x)}
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