objective c - Should NSNotificationCenter selector be with or without an NSNotification object -

i'm doing code cleanup , wondering if there official or unofficial standard option below should preferable.

the basic issue have view change logic. code should called both in awakefromnib , whenever notification received. prevent writing same code twice option below preferable.

// option 1 - (void)receivethemechangenotification:(nsnotification *)note {         [self updateinterfacewiththeme]; }  - (void)updateinterfacewiththeme { }  - (void)awakefromnib {         [self updateinterfacewiththeme]; }   // option 2 - (void)receivethemechangenotification:(nsnotification *)note {         [self updateinterfacewiththeme]; }  - (void)awakefromnib {         [self receivethemechangenotification:nil]; }   // option 3 // registered selector notification directly - (void)updateinterfacewiththeme { }  - (void)awakefromnib {         [self updateinterfacewiththeme]; } 

answer pretty simple : if want send data notification ( e.g. id, playerobject, name, anything) use nsnotification parameter.

as far can see don't need parameters since don't need nsnotification.

selector same add button or else. if need know sender, or need kind of information inside notification - use parameter. otherwise can skip it, , (like in case call unnecessary "bridge" function) better option.