xcode 在 Objective-C 中创建和使用枚举
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Create and use an Enum in Objective-C
提问by Ivan Li
I'm currently developing a poker game for iOS in Objective-C, but I'm having issues with using enums. I would like to create an enumcalled "Suit" and use it in my Card class, since every card would have its deck and suit such as "Ace Spade".
我目前正在用 Objective-C 为 iOS 开发一个扑克游戏，但是我在使用enums 时遇到了问题。我想创建一个enum名为“花色”并在我的卡片类中使用它，因为每张卡片都有自己的套牌和花色，例如“Ace Spade”。
Where do I define my enum?
我在哪里定义我的enum？
typedef enum Suit {
Diamond,
Club,
Heart,
Spade
}
Also, what type of class should I define the Suit enumin (ex. NSObject, UIView, etc.)?
And, after I import Suit.hin Card.h, can I define it as property directly in Card.h?
此外，什么类型的类的，我应该定义套装enum中（例如。NSObject，UIView等）？而且，在我导入Suit.h后Card.h，我可以直接将其定义为属性Card.h吗？
I'm not very familiar with Objective-C, so any help is appreciated.
我对 Objective-C 不是很熟悉，所以任何帮助表示赞赏。
回答by Quuxplusone
typedef enum {
Clubs, Diamonds, Hearts, Spades
} Suit;
typedef int Value;
struct Card {
Suit suit;
Value value;
};
or, if you really think Cardneeds to be a heavyweight class, then
或者，如果你真的认为Card需要成为一个重量级的班级，那么
@interface Card : NSObject
@property Suit suit;
@property Value value;
@end
