Is it safe to declare blocks in init?

I need to call a function that takes a block. Does it cause a problem if I do so inside of an init method?

-开发者_运维问答 (id)initWithObjectThatWantsABlock:(Blar *)blar {
    if ((self = [super init])){

      [blar takeBlock:^{
          NSLog(@"Hi");
      }];

    }
}

Yes. It's still just a function, and as long as it doesn't depend on anything that you haven't initialised, it should be fine.