2008-11-26 rawget() everyday Lua #!/usr/bin/env lua mt = {} mt.__index = function(t, idx) return "FOO" end t = { "foo", "bar", "baz" } setmetatable(t, mt) print(t[2]) print(t["x"]) print(rawget(t, 2)) print(rawget(t, "x")) で、 bar FOO bar nil思っているのと違う動きなのだが…