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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
                ## 類型斷言 類型斷言用于提取接口的底層值(Underlying Value) ~~~ v, ok := parm.(Animal) ~~~ 示例: ~~~ package ch1 import ( "fmt" "testing" ) type Animal interface { Run() } type Person struct { name string } func (p Person) Run() { fmt.Println("Persion running") } // 類型斷言 func EqualAnimal(param interface{}) bool { _, ok := param.(Animal) fmt.Println("is animal:", ok) return ok } // 類型選擇(Type Switch) func IsAnimal(parm interface{}) { switch parm.(type) { case Animal: fmt.Println("is Animal") default: fmt.Println("unknown") } } func TestPersonRunning(t *testing.T) { p := Person{"jim"} //IsAnimal(p) EqualAnimal(p) } ~~~ *說明:如果一個類型實現了接口,那么該類型與其實現的接口就可以互相比較*
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