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                反射獲取基本類型 反射:可以在運行時動態獲取變量的相關信息 import "reflect" ~~~ a. reflect.TypeOf(),獲取變量的類型,返回reflect.Type類型 b. reflect.ValueOf(),獲取變量的值,返回reflect.Value類型 c. reflect.Value.Kind(),獲取變量的類別,返回一個常量 d. reflect.Value.Interface(),轉換成interface{}類型 ~~~ ~~~ package main import ( "fmt" "reflect" ) func main() { var x float64 = 3.4 fmt.Println("type:", reflect.TypeOf(x)) v := reflect.ValueOf(x) fmt.Println("value:", v) fmt.Println("type:", v.Type()) fmt.Println("kind:", v.Kind()) fmt.Println("value:", v.Float()) fmt.Println(v.Interface()) fmt.Printf("value is %5.2e\n", v.Interface()) y := v.Interface().(float64) fmt.Println(y) } ~~~ 輸出如下: ~~~ type: float64 value: 3.4 type: float64 kind: float64 value: 3.4 3.4 value is 3.40e+00 3.4 ~~~
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