Module:No globals: Difference between revisions
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(Tesr) |
(require('Module:No globals')) |
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| Line 1: | Line 1: | ||
require('Module:No globals') | |||
local mt = getmetatable(_G) or {} | local mt = getmetatable(_G) or {} | ||
function mt.__index (t, k) | function mt.__index (t, k) | ||
Revision as of 11:03, 1 October 2014
require('Module:No globals') local mt = getmetatable(_G) or {} function mt.__index (t, k) if k ~= 'arg' then error('Tried to read nil global ' .. tostring(k), 2) end return nil end function mt.__newindex(t, k, v) if k ~= 'arg' then error('Tried to write global ' .. tostring(k), 2) end rawset(t, k, v) end setmetatable(_G, mt)