Can I use an enum as a property in Objective C

Question

I saw it is customed to use a boolean property as a flag. something like that:

@property (nonatomic) BOOL commaAlreadyIntroduced;

I need something like that but with at least 3 or 4 states.

Can I use an enum?

The standalone enum should look like:

typedef enum stackState{
    empty, oneOperand, operandAndOperator, fullStack
}stackState;

Solution 1

Yes, it's not a problem:

@property (nonatomic, assign) stackState yourIvar;

Solution 2

@property (nonatomic, assign) enum stackState stackStateVar;

Without 'enum' added, my unit tests kept showing errors.

Solution 3

@property (nonatomic, assign) enum stackState yourIvar;

(was getting errors until I added enum)

Comments

[Ousmane D.]

this post has been here for 4 years, i don't think any new answers would get much attention.

[Philipp Hofmann]

Could be because you don't use typedef or NS_ENUM for your enum.