how do for loop and table work in lua

content

local reading_scores = { teej_dv = 10, ThePrimeagen = "N/A" }
for index = 1, #reading_scores do
  print(reading_scores[index])
end

this code doesn’t print anything
because when for idx, #table is used, lua treats the table as an array
- # operator gets the length of an array
if the table actually does not contain any array element, #table returns 0
- so the for loop isn’t executed at all

local reading_scores = { teej_dv = 10, ThePrimeagen = "N/A", 3 }
for index = 1, #reading_scores do
  print(reading_scores[index])
end