在golang中打印切片的地址

Question

我在C中有一些exp,我对golang来说是全新的

func learnArraySlice() {
intarr := [5]int{12, 34, 55, 66, 43}
slice := intarr[:]
fmt.Printf("the len is %d and cap is %d \n", len(slice), cap(slice))
fmt.Printf("address of slice 0x%x add of Arr 0x%x \n", &slice, &intarr)

}

现在golang切片是一个数组的引用,它包含指向切片和切片上限的数组len的指针,但是这个切片也将在内存中分配,我想打印该内存的地址.但无法做到这一点.

Answer 1

http://golang.org/pkg/fmt/

fmt.Printf("address of slice %p add of Arr %p \n", &slice, &intarr)

%p 将打印地址.

Answer 2

切片及其元素是可寻址的:

s := make([]int, 10)
fmt.Printf("Addr of first element: %p\n", &s[0])
fmt.Printf("Addr of slice itself:  %p\n", &s)

Answer 3

对于切片底层数组和数组的地址（它们在您的示例中是相同的），

package main

import "fmt"

func main() {
    intarr := [5]int{12, 34, 55, 66, 43}
    slice := intarr[:]
    fmt.Printf("the len is %d and cap is %d \n", len(slice), cap(slice))
    fmt.Printf("address of slice %p add of Arr %p\n", &slice[0], &intarr)
}

输出：

the len is 5 and cap is 5 
address of slice 0x1052f2c0 add of Arr 0x1052f2c0