Originally Posted by Elderin
Code:
MyFontStr_1:SetText("Title One");
_G.MyFontStr_1:SetText("Title One");
_G["MyFontStr_1"]:SetText("Title One");
getglobal("MyFontStr_1"):SetText("Title One");
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Originally Posted by Dridzt
#1 makes an implicit lookup in the global table but is otherwise the same as #2 and #3.
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As stated, #2 and #3 are exactly the same in both function and performance, however #1 is faster since it only requires a single index operation. #2 and #3 have to index
_G from the global environment, which is a reiteration of itself, then index
MyFontStr_1 from the resulting table. This requires 2 indexing operations and is therefore much slower in comparison. Note the number of indexing operations are measured before the processing of
FontString:SetText(), which adds a couple more indexing operations to it (one to check the
FontString table and the other to default into its metatable).
To break down the use of each, #1 is best if you need to access just one object directly. #3 would be for dynamically accessing from a list of objects in which you need to apply values to a name in order to construct it. #2 has no practical use. It has nothing more to offer than #1 and uses up more CPU to process for the same result.