[Interest] Does removing 'private slots' from .h files have any advantages? Disadvantages?

[Guido Seifert]

Hi,
I am just curious. In one of my old projects I replaced all SIGNAL/SLOT connections with the newer function pointer api.
In theory I now could remove all the 'public/protected/private slot' markers from my .h files. Now I am wondering, if this
is only cosmetic, or does it have any advantages/disadvantages? Faster compile time? Smaller executables? 

Guido