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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                值類型和引用類型 值類型:int、float、bool、string、數組、結構體struct 引用類型:指針、切片slice、map、管道chan、interface 值類型在拷貝的時候是拷貝值,引用類型拷貝的是指針 ``` type 結構體名稱 struct{ field1 int field2 string Field3 float32//開頭大寫,可以被其他包訪問 } type user struct { password string Nickname string ? ? Scores [5]float64//數組 ? ? ptr *int//指針 ? ? slice []int//切片 map1 map[string]string //map } var u1 user var u2 user = User{...}//按順序放字段 var u3 user = User{ password:"123", Nickname:"123123",//與PHP不同,必須帶逗號 } var u4 *user = new(user) (*u4).Nickname = "3"//標準寫法 u4.Nickname = "abc"//等價于標準寫法,為了使用方便底層特定設計 var u5 *user = &user{} ``` 結構體別名會被認為新的數據類型,但是可以強制轉換 > JSON輸出 ``` u := user{ password: "123", Nickname: "123123", } u.password = "22333" data, err := json.Marshal(u)//只能轉換首字母大寫的字段 if err != nil { ? ? ?fmt.Println("json encodeing err", err) return } fmt.Println(string(data)) //使用tag標簽解決字段首字母大寫的問題,Nickname->nickname type user struct { password string Nickname string `json:"nickname"` } ```
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