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golang interface 中,除了声明方法,还可以声明属性么?

类似下面这种,声明 string 类型必备属性 ServiceName 可以么?

type Router interface {
    ServiceName string
    Route(msgB []byte) error
}

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golang接口只是行为(方法)的集合,不含实体。所谓属性通常放在结构体内。


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