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Lua Statics?
Author
I''ve finally realized that there are no static variables in Lua. So is there an alternative in Lua that works similar to statics?
Thanks.
-Nick
Global variables? In fact all variables are global by default,
unless you specify "local".
Kami no Itte ga ore ni zettai naru!
unless you specify "local".
Kami no Itte ga ore ni zettai naru!
The classic way is to use closures.
Personally, I don''t do that much. To me, static variables imply that I don''t actually want a function at all, but rather an object. Here''s how I''d make a counter:
Ultimately, it''s mostly a matter of personal preference.
"Sneftel is correct, if rather vulgar." --Flarelocke
do local currentcount = 0 -- defines local variable in the do..end scope, and initializes it function counter() currentcount = currentcount+1 -- uses the value as a closure, so its value is saved return currentcount endendprint(counter()) -- prints ''1''print(counter()) -- prints ''2''Personally, I don''t do that much. To me, static variables imply that I don''t actually want a function at all, but rather an object. Here''s how I''d make a counter:
function newcounter() return { currentcount = 0, next = function(self) self.currentcount = self.currentcount + 1 return self.currentcount end }endcounter = newcounter()print(counter:next())print(counter:next())Ultimately, it''s mostly a matter of personal preference.
"Sneftel is correct, if rather vulgar." --Flarelocke
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