local scope once again
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- Subject: local scope once again
- From: "Leo Razoumov" <slonik.az@...>
- Date: 2006年12月12日 10:42:29 -0500
Hi Everyone,
I am puzzled by the behaviour of the following code:
function foo()
local x= 1
local x= 20
local x= 300
local i=1
while true do
local name, value = debug.getlocal( 1, i)
if not name then break end
print("i=",i, "name=",name, "value=",value)
i= i+1
end
end
-- call the function
foo()
-- OUTPUT follows:
i= 1 name= x value= 1
i= 2 name= x value= 20
i= 3 name= x value= 300
i= 4 name= i value= 4
I am surprised to see that there are three different local 'x'
variables. All of them belong to the same "block" which is foo()
function body and, thus, should have the same scope. Why does not Lua
collapses them into just one local x variable??
--Leo--