• <listing id="tnsa8"><menu id="tnsa8"></menu></listing>

    1. <listing id="tnsa8"></listing>

        <small id="tnsa8"></small>

        <small id="tnsa8"></small>

          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
          
          相关文章
          相关标签/搜索
          王中王三肖选一肖