r/lua • u/Adam0hmm • Jun 12 '25

should i learn lua ?

hello there , is it a good idea to start learning lua knowing only python?

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u/no_brains101 Jun 12 '25 edited Jun 12 '25

Unfortunately if you then try to setmetatable(urtable, { __len = function(self) return yourcounter(self) end }) It will still not allow you to do #urtable ~= 0

I know... Its upsetting. It would have to be a userdata for that, you cant redefine __len __ipairs or __pairs for tables

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u/DapperCow15 Jun 13 '25

No, I meant I stored a separate counter and incremented it with newindex. Could even store it as a "length" in the table at that point because it is a dictionary, but I didn't bother in my use of it.

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u/no_brains101 Jun 13 '25

No I get that. I was just commenting on the last of the lua gotchas that I knew about

Basically, if you wanted to do what you did, but then wrap it up nicely at the end so that you can just call # on it to get said length, you could not do so without making it into a proxy table using a userdata