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48 lines
933 B
48 lines
933 B
3 years ago
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package main
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import "fmt"
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/**
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定义切片
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var slice1 []type = make([]type, len)
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slice1 := make([]type, len)
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指定容量,capacity
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make([]T, length, capacity)
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*/
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func main() {
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s := []int{1, 2, 3, 4}
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s1 := make([]int, 2, 3)
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fmt.Println(s)
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fmt.Println(len(s1), cap(s1), s1)
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fmt.Println(len(s), cap(s), s)
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s2 := s[:3]
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fmt.Println(s2)
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var numbers []int
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printSlice(numbers)
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/* 允许追加空切片 */
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numbers = append(numbers, 0)
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printSlice(numbers)
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/* 向切片添加一个元素 */
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numbers = append(numbers, 1)
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printSlice(numbers)
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/* 同时添加多个元素 */
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numbers = append(numbers, 2,3,4)
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printSlice(numbers)
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/* 创建切片 numbers1 是之前切片的两倍容量*/
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numbers1 := make([]int, len(numbers), (cap(numbers))*2)
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/* 拷贝 numbers 的内容到 numbers1 */
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copy(numbers1,numbers)
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printSlice(numbers1)
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}
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func printSlice(x []int){
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fmt.Printf("len=%d cap=%d slice=%v\n",len(x),cap(x),x)
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}
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