swift中对象和结构体的使用

• 对象 

class Student{
   
    var name: String = "";
    var age: Int = 0;
    
    init(name: String ,age:Int) {
        self.name = name
        self.age = age
    }
}

let stu = Student(name: "xiao", age: 18)
print("姓名： \(stu.name)")//姓名： xia

 

• 结构体

struct Person{
    
    var name: String = "";
    var age: Int = 0;
    
    init(name: String ,age:Int) {
        self.name = name
        self.age = age
    }
}

let person = Person(name: "xiao", age: 18)
print("姓名： \(person.name)")//姓名： xiao

 

结构体不需要考虑引用计数，接头体是值赋值，就是a赋值给b，如果改变b，则a不变，举例

let person = Person(name: "xiao", age: 18)
print("姓名： \(person.name)")//姓名： xiao
var per1 = person;
per1.name = "da"

print("姓名： \(person.name)")//姓名： xiao