Create a for loop to add 39 buttons to an array

Question

I have 39 different UIButton variables in my .h file, but I would like to add each of them to an array without having to type out the same thing 39 times.

Is there a

Answer 1

Like so:

NSMutableArray *arr = [NSMutableArray array];
for(int i = 1; i <= 39; ++i) {
  [arr addObject:[self valueForKey:[NSString stringWithFormat:@"btn%d", i]]];
}