go-了解数组和切片的基础用法

    var splice1 []int
	fmt.Printf("splice1: len:%d,cap:%d,%T", len(splice1), cap(splice1), splice1)

  splice1: len:1,cap:1,[]int

var splice1 []int = make([]int, 1, 3)

	fmt.Printf("splice1: len:%d,cap:%d,%T\n", len(splice1), cap(splice1), splice1)
	splice1 = append(splice1, 1)
	splice1 = append(splice1, 1)
	splice1 = append(splice1, 1)
	splice1 = append(splice1, 1)
	// 超出当前数组的长度后,会以cap=3的进行对数组扩容
	fmt.Printf("splice1: len:%d,cap:%d,%T\n", len(splice1), cap(splice1), splice1)

  splice1: len:1,cap:3,[]int
  splice1: len:5,cap:6,[]int

    splice2 := []int{1, 2, 3,4}
	fmt.Printf("splice2: len:%d,cap:%d,%T\n", len(splice2), cap(splice2), splice2)
	splice2 = append(splice2, 1)
	fmt.Printf("splice2: len:%d,cap:%d,%T\n", len(splice2), cap(splice2), splice2)

splice2: len:4,cap:4,[]int
splice2: len:5,cap:8,[]int