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  1. tt = {}
  2. tt[1] = 123
  3.  
  4. setmetatable(tt, {
  5. 	__index= 
  6. 	function(t, Key)
  7. 		print("t---->", t)
  8.  
  9. 		t[1] = 1234		
  10. 	end
  11. }
  12. )
  13.  
  14. print("tt--->", tt,"t[2]--->", tt[2],"t[1]--->", tt[1])
  15.  
Success #stdin #stdout 0.01s 5284KB
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stdin
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Standard input is empty
stdout
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t---->	table: 0x55b8a8c5d680
tt--->	table: 0x55b8a8c5d680	t[2]--->	nil	t[1]--->	1234
https://ideone.com/bYVqtw
print hello
language:
Lua (luac 5.3.3)
created:
3 days ago
visibility:
public

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