Quantcast Unit Existence: UnitExists vs UnitGUID - WoWInterface
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10-04-18, 01:33 PM   #1
stako
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Unit Existence: UnitExists vs UnitGUID

Having a look at the Blizzard_ArenaUI addon, there's a line to check for the existence of a unit:
Lua Code:
  1. if ( UnitGUID(self.unit) ) then --Use UnitGUID instead of UnitExists in case the unit is a remote update.

What does it mean by 'remote update' here and what's the difference between using UnitExists and UnitGUID when checking for the existence of a unit?
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10-04-18, 02:10 PM   #2
myrroddin
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UnitGUID requires the unit to actually be in the game, while UnitExists could be someone in the game or merely in remote chat. At least that's how I would interpret the intent. Also, UnitExists can sometimes fail when the player is in a loading screen, ie:// between worlds, whereas UnitGUID is assigned upon first logon and never changes until logout/exit.
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WoWInterface » Developer Discussions » Lua/XML Help » Unit Existence: UnitExists vs UnitGUID

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