local a = {} local b = {} setmetatable(a, b) --这个 table 中的 vaules 就是 weak b.__mode = "k" -- now 'a' has weak keys local t1 = {} local t2 = {} -- creates first key a[t1] = 0 a[t2] = 1 --t2 is empty,can be gc t2 = {} collectgarbage() for k, v in pairs(a) do print(v) end 0
lua weak表与gc
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转载自xiangjie88.iteye.com/blog/2401204
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