Question

How to use function with variadic arguments in Lua

Answer 1

function average(...)
   result = 0
   local arg = {...}
   for i, n in ipairs(arg) do
      result = result + n
   end
   return result/#arg
end

print(average(3, 7, 8, 2, 6, 9))





--[[
run:
  
5.8333333333333
 
--]]

 

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Answer 2

function f(...)
   local arg = {...}
   for i, n in ipairs(arg) do
      print(i, n)
   end
end

f(43, 67, 98, 12, 46, 90)





--[[
run:
  
1	43
2	67
3	98
4	12
5	46
6	90
 
--]]

 

Cleaner teeth, healthier you!
Get The Secret to a Bright and Healthy Smile