Objective-C Parameter Names Unneeded in Headers

In an Objective-C "@interface" the names for parameter variables don't really matter. In fact, they can all be exactly the same name, and different from the "@implementation", which is useful in header files.

Method names are almost always descriptive enough. If parameter names are identical, there's less to maintain; I like using a single underscore "_" for all header-file parameters.

Here's an example of a method that has lots of parameters, where the parameter names are kind of pointless:

  @interface UIView : . . .

  + (void)
  transitionWithView:(UIView *)         view
  duration:(NSTimeInterval)             duration
  options:(UIViewAnimationOptions)      options
  animations:(void (^)(void))           animations
  completion:(void (^)(BOOL finished))  completion;

They could actually have just said this (changing all names to "_"):

  @interface UIView : . . .

  + (void)
  transitionWithView:(UIView *)_
  duration:(NSTimeInterval)_
  options:(UIViewAnimationOptions)_
  animations:(void (^)(void))_
  completion:(void (^)(BOOL finished))_;