ProTip: Better way to raise an exception when -init is called on a class that implements a designated initialiser. Turn on -Wstrict-selector-match to get compiler warnings when this selector doesn't exist. Some IDEs (like AppCode) will even refactor this for you should you change the selector ;) The best thing about this is if its inside a stati…

InitWithException.m

  - (instancetype)init
  {
    SEL selector = @selector(initWithName:);
    [NSException raise:NSGenericException format:@"Please use %@", NSStringFromSelector(selector)];
    return nil;
  }
  
  - (instancetype)initWithName:(NSString *)name
  {
    self = [super init];
    
    if (self) {
      _name = name;
    }
    
    return self;
  }