Go中的通用编程。避免硬编码类型断言

Go中的通用编程。避免硬编码类型断言

最终，我找到了一种方法。请遵循下面的Go Playground和代码段：

前往游乐场：避免硬编码类型声明

//new approach SetAttribute, without any hard pred type assertion, just based on objectType parameterfunc SetAttribute(myUnknownTypevalue *interface{}, attributeName string, attValue interface{}, objectType reflect.Type) {    // create value for old val    oldValue := reflect.ValueOf(*myUnknownTypevalue)    //create a new value, based on type    newValue := reflect.New(objectType).Elem()    // set the old value to the new one, making the     // implicit type assertion, not hard coding that.    newValue.Set(oldValue)    //set value attribute to the new struct, copy of the old one    field := newValue.FieldByName(attributeName)    valueForAtt := reflect.ValueOf(attValue)    field.Set(valueForAtt)    //capture the new value from reflect.Value    newValInterface := newValue.Interface()    //set the new value to the pointer    *myUnknownTypevalue = newValInterface}