What is _ in function or variable name?

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#1 
local Class = {}
Class.__index = Class

function Class.new()
   local self = setmetatable({}, Class)
   self._Variable = 1
   return self
end

function Class:_function()

end

Like this, i can’t understand the usage of that _.

#2

_something usually denotes a “private” variable or method. Basically, it shouldn’t be accessed outside of the class itself.

1 Like
#3

Then, if it is module script, it cannot be used outside the module?

#4

It can be used outside the module if given access to it. It’s not meant to be changed externally (unless it is).

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#5

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