Lua Statics?
May 20, 2004 03:08 PM
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
450
May 20, 2004 04:05 PM
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!
神はサイコロを振らない！
1,788
May 21, 2004 02:10 PM
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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