golang struct 用法总结

package main import "fmt" //1 type person struct{ name string age int weight float64 } //2 匿名字段 type class struct{ person //匿名字段，默认继承 speciality string } // 3自定义匿名字段 type skill[]string type school struct{ person //匿名，默认继承 skill //自定义匿名字段 int //自定义匿名字段 speciality string } func main() { var P1 person //P person结构体 P1.name = "Astaixe" P1.age = 20 var P2 person //P person结构体 P2.name = "li" P2.age = 21 //1 P3, me:= P1.Older(P1,P2) //值传递,内存中一份拷贝 fmt.Printf("The Person popertity name=%s age=%d\n",P3.name,me) //2 PPE,ME:=Oldl(P1,P2) //值传递一份拷贝 fmt.Printf("The Person popertity name=%s age=%d\n",PPE.name,ME) //4 // mark := class{person{"Mark", 25, 120}, "Computer Science"} // 我们访问相应的字段 fmt.Println("His name is ", mark.name) fmt.Println("His age is ", mark.age) fmt.Println("His weight is ", mark.weight) fmt.Println("His speciality is ", mark.speciality) // 修改对应的备注信息 mark.speciality = "AI" fmt.Println("Mark changed his speciality") fmt.Println("His speciality is ", mark.speciality) // 修改他的年龄信息 fmt.Println("Mark become old") mark.age = 46 fmt.Println("His age is", mark.age) // 修改他的体重信息 fmt.Println("Mark is not an athlet anymore") mark.weight += 60 fmt.Println("His weight is", mark.weight) //修改内置结构体 mark.person = person{"Marcus", 55, 220} //fmt.Println("His name age is, ", mark.name,mark.age) fmt.Println("His name is ", mark.name) fmt.Println("His age is ", mark.age) fmt.Println("His weight is ", mark.weight) mark.person.age -= 1 //内置修改 fmt.Println("His age is", mark.age) //5 // 初始化jane //二级继承 jane :=school{person:person{"jane", 35, 120}, speciality:"Biology"} // 现在我们来访问相应的字段 // 现在我们来访问相应的字段 fmt.Println("Her name is ", jane.name) fmt.Println("Her age is ", jane.age) fmt.Println("Her weight is ", jane.weight) fmt.Println("Her speciality is ", jane.speciality) // 我们来修改他的skill技能字段 jane.skill = []string{"anatomy"} fmt.Println("Her skills are ", jane.skill) fmt.Println("She acquired two new ones ") jane.skill = append(jane.skill, "physics", "golang") fmt.Println("Her skills now are ", jane.skill) fmt.Println(jane) // 修改匿名内置类型字段 jane.int = 3 fmt.Println("Her preferred number is", jane.int) } //struct 内部 func (P person)Older(p1,p2 person)(person,int){ if(p1.age>=p2.age){ return p1,p1.age-p2.age }else{ return p2,p2.age-p1.age } } //全局函数,golang不支持函数重载，运算符+可以多次参与运算，参考go lanauage func Oldl(p1,p2 person)(person,int){ if(p1.age>=p2.age) { return p1, p1.age - p2.age }else{ //...//else 可以 省略 return p2,p2.age-p1.age } } 谢谢大家