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11,042 PointsWhy not always use the _property keyword instead of using self.property?
As I wrote in the title, why it's a common pratice to use self.property instead use _property, that's always ready to use, unlike the self.property notation?
1 Answer
agreatdaytocode
24,757 PointsSo in Objective-C you had something like this:
@property (nonatomic, strong) NSString *someString;
You could access someString
by doing self.someString
or _someString
self.someString` is the recommended way of doing it since it passes through KVO and calls the correct setters / getters (if you were to override those)
_someString` would just set the variable
So an @property was a bit magic because it would create two methods that you woudln't see:
- (void)setSomeString:(NSString *)someString {}
and -(NSString *)someString`
You can read up on all this here