http://blog.haohtml.com/archives/14239

 struct定义的属性如果是小写开头的，那么该属性不是public的，不能跨包调用 (implicit assignment of unexported field)

 

type Rect struct {    x, y float64    width, height float64}// 定义一个对象，以下四种等价。rect1 := new(Rect)rect2 := &Rect{}rect3 := &Rect{0, 0, 100, 200}rect4 := &Rect{width:100, height:200}   //===================================package entitiestype Company struct {    Id string    Name string    Phone string    Address string}// 声明一个类型r := entities.Company{Id:"001", Name:"test name", Phone:"test phone", Address:"test address"}