本文先给出Go语言中struct类型作为函数参数传入的例子，然后给出总结

首先看下面代码

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func changeValue(person Person){
	person.name = "sanye"
	person.age = 22
}

func changePoint(person *Person){
	person.name = "sanye"
	person.age = 22
}
func main()  {
	person := Person{
		name:"origin",
	}
	changeValue(person)
	fmt.Printf("Person:\n person.name: %s---person.age: %d\n", person.name, person.age)
	changePoint(&person)
	fmt.Printf("*Person:\n person.name: %s---person.age: %d\n", person.name, person.age)
}

//output:
//Person:
// person.name: origin---person.age: 0
//*Person:
// person.name: sanye---person.age: 22

总结

  • struct类型的传递是按值传递的，与数组[5]byte等的传递相似，也可以理解为和C++一样
  • struct类型传递与切片不同，切片事实上是一个指针（栈）指向一块数组（堆）这样的数据结构，所以无论如何都是传入指针或者是指针（栈）的指针（指向栈）
  • 可以理解为: 切片类似于Java（切片还多了个特色，通过传入切片可以修改指针（栈）本身，而Java是做不到的）， 而数组类似于C++

注意：struct类型与切片传值方式不同而与数组相同

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