Bug in Lua4.1w4 Multiple Assings?
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- Subject: Bug in Lua4.1w4 Multiple Assings?
- From: Dominik Wagner <nikdo@...>
- Date: 2002年4月17日 19:52:59 +0200
Hi there,
i have the following a little complicated looking code. It's not very
useful, it was just a test of how something could be done. But i think i
discovered a bug in lua4.1w4, because if you replace the multiple
assingnment with two straight assings (what you definatley would do in
this code anyway, because there's no need for the multiple one) then it
works fine. if you keep the multiple assignment in the middle the
assignment assings the return of strsub to "Return" AND "self.Pos" wich
is quite strange.
-- snip --
do
local myfunc=function(self)
local Return
print(self.Pos, type(self.Pos), self.Step, type(self.Step))
if self.Pos<=strlen(self.String) then
self.Pos, Return =
self.Pos+self.Step,
strsub(self.String,self.Pos,self.Pos+self.Step-1)
-- Uncomment this and comment the above and everything works fine!
-- Return=strsub(self.String,self.Pos,self.Pos+self.Step-1)
-- self.Pos=self.Pos+self.Step
return Return
else
return false
end
end
local MetaTable={call=myfunc}
function strstep(String,Step)
local Return
if Step==nil then Step=1 end
Return={String=String,Pos=1,Step=Step}
metatable(Return,MetaTable)
return Return,Return()
end
end
local Function
Function,String=strstep('1234567890',3)
while String~=false do
print(String)
String=Function()
end
-- snip --
Or do i have a strange typo in there?
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