flutter - dart在函数参数中添加数据类(dart add data class in function parameter)

Question

i have three methods like these:

(我有三种这样的方法：)

func1() async {
 ...
 var list = (response['contents'] as List).map((i) => Quotation.fromJson(i)).toList();
 ...
} // has 20 lines

func2() async {
 ...
 var list = (response['contents'] as List).map((i) => Delivery.fromJson(i)).toList();
 ...
} // has 20 lines

func3() async {
 ...
 var list = (response['contents'] as List).map((i) => Discovery.fromJson(i)).toList();
 ...
} // has 20 lines

now i would like to add a parameter to generalize the SomeClass.fromJson(i)

(现在我想添加一个参数来概括SomeClass.fromJson(i))

so the code would be like this

(所以代码会像这样)

generalFunc( someType SomeClass ) async {
 ...
 var list = (response['contents'] as List).map((i) => SomeClass.fromJson(i)).toList();
 ...
}

... call generalFunc(Quotation) // reduce 19 lines
... call generalFunc(Delivery) // reduce 19 lines
... call generalFunc(Discovery) //reduce 19 lines

how do i accomplish this?

(我该如何做到这一点？)

thank you..

(谢谢..)

  ask by nashihu translate from so

Answer 1

等待大神答复