go 基础 结构体 接口 访问权限

package School

type SchoolModel struct {
    Name         string
    Address      string
    StudentCount int
    Is985        bool
}

type ISchoolDal interface {
    GetList()
    Add()
    Delete()
}

package School

type SchoolDal struct {
}

func (o *SchoolDal) GetList() []SchoolModel {

    var result []SchoolModel

    if (result == nil) {

        println("切片是空的")
    }
    var t = SchoolModel{"江西财大", "南昌市", , false}
    var t2 = SchoolModel{"江西财大2", "南昌市", , false}
    result = append(result, t)
    result = append(result, t2)
    return result
}

func (o *SchoolDal) Add(m SchoolModel) {

    println("这里是Add")
}

func (o *SchoolDal) Delete(m SchoolModel) {

    println("这里是Delete")
}

访问权限：
1.类、方法首字段小写：仅仅同一个包访问

2.反之，大写：全项目访问

package main

import "Study1/dto"

func main() {
    //可以访问dto.Student  ，首字母大写
    var stu = dto.Student{"","ligenyun",}

    println(stu.Sname)

    //不可以访问dto.student  ，首字母写写
    var stu2 = dto.student{"","ligenyun",}

    println(stu2.sname)
}

package dto

type Student struct {
    Sno string
    Sname string
    Sage int
}

type student2 struct {
    sno string
    sname string
    sage int
}