Are performSelector and respondsToSelector banned by App Store?

Question

My latest build was accepted into the Apple app store, but I got the notice quoted below a couple of days later.

My app also uses Rollout.io, and I asked explicitly i

Answer 1

It is not respondsToSelector:, performSelector: that are banned. The ban is on putting dynamic content as a parameter to this method. For example, this is not banned:

if([self.delegate respondsToSelector: @selector(myDelegateMethod)]) {
   [self.delegate performSelector: @selector(myDelegateMethod)];
}

However, this code might be banned:

NSString *remotelyLoadedString = .... (download from your backend)
[self performSelector: NSSelectorFromString(remotelyLoadedString)];