Question

Here is the object, and have following attribute:

NSString attri1;
NSString attri2;
NSString attri3;
NSString attri4;

If I want to list these attri, I can call

NSLog(aObj.attri1);

But can I make the 1 as a variable to call it from a loop? Is this possible to do so in objective-c?

for(int i = 0; i < [array count]; i++)
{
    NSLog(aObj.attri1); //is this possible to become one line, dynamic generated variable
}

Thank you. btw, What is this feature called? Thanks.

Answer 1

If you want to dynamically access a property of an object, that can be done with Key Value Coding.

If the class is KVC-compliant, as most NS classes are, you can use valueForKey: or valueForKeyPath: to access a property with a string:

for(int i = 0; i < [array count]; i++) {
    NSLog([[aObj valueForKey:[NSString stringWithFormat:@"attrib%d", i]]);
}