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If I did something wrong, please let me know.

About myself

Playing Minecraft since 1.1. Current version: 1.5.1.

I prefer playing with modifications, such as ComputerCraft, IC2 (not out for 1.5 yet), Forestry (alpha for 1.5.1, many bugs, including critical, are present)...

I am a member and an administrator of the Russian wiki. I can be found there.

I use Opera (if that's important).

How NOT to code

ComputerCraft!

file = io.open(path, "w")
file:write(str)
file:close()
dofile(file)

Using a file handle for dofile is incorrect, a string (file path) should be used instead.

e, key = os.pullEvent("key")
if e == keys.t then
  doSomething()
elseif e == keys.y then
  doSomethingElse()
end

e is the event handled by os.pullEvent. key is the parameter (key code). Therefore: if key == keys.t then...

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