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Jesse Reichenstein
Courses Plus Student 1,595 PointsUnderscore used with variables
I'm confused, when do you use an underscore before your variable name?
2 Answers
Robin Malhotra
14,883 PointsIt's a default way of referring to your ivars(instance variables for properties.
for example, @property (nonatomic,strong) NSInteger *x;
@synthesize x=_x;//default
In case you do not put in a @synthesize, Xcode automatically sets your ivar names to underscore+property name
If you're a little freaky with code, you can override by typing
@synthesize x=y
Guillaume Maka
Courses Plus Student 10,224 PointsHi,
You use it in class methods implementation.
@implementation Object {
NSString *_aString;
}
- (instancetype) init {
self = [super init];
if(self){
_aString = @"string";
}
return self;
}
@end