global & unique
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- Subject: global & unique
- From: Nodir Temirhodzhaev <tnodir@...>
- Date: 2004年4月19日 10:11:25 +0400 (MSD)
Following solution is expensive.
Perhaps, you will advise the best?
Thanks in advance.
---[inc.lua]---
print(s)
---
---[main.lua]---
-- Global (but unique for thread) variables?
setmetatable(_G,
{__index = function(t, k) return getfenv(0)[k] end})
local function include(file)
local fun = _LOADED[file]
if not fun then
fun = assert(loadfile(file))
setfenv(fun, _G)
_LOADED[file] = fun
end
return fun()
end
local function th(a)
local env = setmetatable({s = a}, {__index = _G})
setfenv(0, env)
include"inc.lua"
coroutine.yield()
include"inc.lua"
end
local co1, co2 = coroutine.create(th), coroutine.create(th)
coroutine.resume(co1, 1)
coroutine.resume(co2, 2)
coroutine.resume(co1)
coroutine.resume(co2)
---
Prints:
1
2
1
2