Question

我想用参数定义一个函数，该参数必须是特定的，例如在列表中定义的

我记得这年前做过，但是我的记忆使我失败了。

示例

public void foo(specific choice list defined in my class){}

specific-list = x，y，z

将其列出（我认为）

foo(myclass.x)

Answer 1

要扩展@kaffekopp的评论，您似乎在谈论enum，即

public enum MyEnum // declare the enum type (optional: specify an underlying integer type)
{
    Apple,   // define the choices (note: enums are **not** strictly enforced;
    Pear,    // they are just named integers, and at runtime you can be surprised to find
    Bicycle, // that the actual value is 42, a value you never defined)
}

with（在MyClass上）：

public MyEnum SomeProp {get;set;} // define a property as being of that enum type

和：

public void Foo(MyEnum option) {...} // define a method that takes a parameter of the type

然后选择：

Foo(MyEnum.Bicycle); // passing a constant/literal

或：

MyClass obj = ...
Foo(obj.SomeProp); // passing an existing value from somewhere

定义一个函数以接受特定的列表参数

1 个答案: