Question

Possible Duplicate:
What do the plus and minus signs mean in Objective C next to a method?

I want to know the difference between the methods with – symbol and with +symbaol.

Ex.-(NSMutableArray *)getContactsList;
+(NSMutableArray *)getContactsList;

Thanks
Praveena.

Answer 1

The difference between the two methods is;

The method which start with “-” is an instance method. you can call that method using the object of the specific class.

Ex:

A *a = [[A alloc] init];
array = [a getContactsList];

And The method which start with “+” is a Class method. you can call that method using class name.

Ex:

array = [A getContactsList];

That is the main difference.

And one more thing in the Class method you can use the Static variables only, instance variables.

Regards,

Satya.