我是Go语言的新手，正在尝试理解字符串在Go语言中是如何工作的，我最大的疑问是，为什么在我的例子中将str从"black"改为"orange"而不改变str的地址，我注意到地址的改变是在使用str_cpy进行复制时。
先谢了。
代码：

func main(){
  // set str as Black
  var str string = "Black"
  log.Println("String is set to: ", str)
  log.Println("Current address of String is: ", &str)

  //set str as black
  log.Println("Testing Mutability...")
  slice := []rune(str)
  slice[0] = 'b'
  str = string(slice)
  log.Println("String after mutation is...", str)
  log.Println("Current address of String is: ", &str)
 
  //make a copy of str, str_cpy expected value: black
  str_cpy := str
  log.Println("StringCOPY is set to: ", str_cpy)
  log.Println("Current address of StringCOPY is: ", &str_cpy)

  //change str from black to Orange
  str = "Orange"
  log.Println("String now is...", str)
  log.Println("Current address of String is: ", &str)

  changeusingPointer(&str)
  log.Println("String was changed using pointer to: ", str)
  log.Println("Current address of String is: ", &str)
  
}

func changeusingPointer(s *string){
  log.Println("s points to ", s)
  *s = "White"
}

我得到的输出是：

2023/02/18 10:39:38 String is set to:  Black
2023/02/18 10:39:38 Current address of String is:  0xc000014060
2023/02/18 10:39:38 Testing Mutability...
2023/02/18 10:39:38 String after mutation is... black
2023/02/18 10:39:38 Current address of String is:  0xc000014060
2023/02/18 10:39:38 StringCOPY is set to:  black
2023/02/18 10:39:38 Current address of StringCOPY is:  0xc000014090
2023/02/18 10:39:38 String now is... Orange
2023/02/18 10:39:38 Current address of String is:  0xc000014060
2023/02/18 10:39:38 s points to  0xc000014060
2023/02/18 10:39:38 String was changed using pointer to:  White
2023/02/18 10:39:38 Current address of String is:  0xc000014060

我期望字符串str的地址在将其值从"black"更改为"orange"时也会更改。