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09-09-14, 07:34 AM   #1
zork
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Removing a table key?

Assuming I want to save guids. At some point in the future I want to remove outdated guids.

Lua Code:
  1. local guids = {}
  2.  
  3. local guidA = "12345"
  4. local guidB = "ABCDE"
  5.  
  6. guids[guidA] = { time=time(), hp=UnitHealth(guidA) }
  7. guids[guidB] = { time=time(), hp=UnitHealth(guidB) }
*edit* Just found what I was looking for in the last sentence.

Note that table.remove only works with numeric indexes. For dictionaries you can just unset tables entries with tablevariable["index"] = nil; http://lua-users.org/wiki/TableLibraryTutorial
So I guess I will do this
Lua Code:
  1. for k,v in ipairs(guids) do
  2.   if time()-3600 > v.time then
  3.     guids[k] = nil
  4.   end
  5. end

Question. If I set the table value for a key to nil. When ipairs is called again. Will ipairs return keys with a value of nil?
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Last edited by zork : 09-09-14 at 07:46 AM.
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WoWInterface » Developer Discussions » Lua/XML Help » Removing a table key?

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