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  1. -- your code goes here
  2.  
  3. o = {}
  4. setmetatable(o, { __index = function(target, key)
  5. 	if key ~= "foo" then error('ERR') end
  6. 	if flag then return 1 end
  7. 	return 2
  8. end})
  9.  
  10. flag = false
  11. print(o.foo)
  12. flag = true
  13. print(o.foo)
Success #stdin #stdout 0s 2832KB
comments (?)
stdin 
Standard input is empty
stdout 
2
1
https://ideone.com/B4ia5T
language:
Lua (luac 5.3.3)
created:
9 years ago
visibility:
public

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