W3School TIY Editor

package main import ("fmt") func main() { numbers := []int{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15} // 原始切片 fmt.Printf("numbers = %v\n", numbers) fmt.Printf("length = %d\n", len(numbers)) fmt.Printf("capacity = %d\n", cap(numbers)) // 创建仅包含所需数字的副本 neededNumbers := numbers[:len(numbers)-10] numbersCopy := make([]int, len(neededNumbers)) copy(numbersCopy, neededNumbers) fmt.Printf("numbersCopy = %v\n", numbersCopy) fmt.Printf("length = %d\n", len(numbersCopy)) fmt.Printf("capacity = %d\n", cap(numbersCopy)) }