数组

实践出真理

package main
import (
    "io"
    "log"
    "os"
)
func main() {
    log.SetOutput(io.MultiWriter(os.Stdout))
    log.SetFlags(log.Lshortfile)
    // 固定数组长度
    var fixedLnegA1 [5]int
    fixedLnegA2 := [4]int{1, 2, 3}
    log.Println("fixedLnegA1=", fixedLnegA1)
    log.Println("fixedLnegA2=", fixedLnegA2)
    // 动态数组,切片 slice, 声明时赋值
    dynamicArray1 := []int{1, 2, 3, 4}
    // 查看数组的数据类型
    log.Printf("fixedLnegA1 %T\n", fixedLnegA1)
    log.Printf("fixedLnegA2 %T\n", fixedLnegA2)
    log.Printf("dynamicArray1 %T\n", dynamicArray1)
    // 循环遍历数组
    for _, vaule := range dynamicArray1 {
        log.Println("value = ", vaule)
    }
}

输出

main.go:17: fixedLnegA1= [0 0 0 0 0]
main.go:18: fixedLnegA2= [1 2 3 0]
main.go:24: fixedLnegA1 [5]int
main.go:25: fixedLnegA2 [4]int
main.go:26: dynamicArray1 []int
main.go:30: value =  1
main.go:30: value =  2
main.go:30: value =  3
main.go:30: value =  4