How do I format values in my lua table to be: t = {['foo'] = true, ['bar'] = true}? - dictionary

Question

This is in relation to a previous question: Checking values across multiple location and returning a match only if the sources are unique.
Essentially, the function relys on the data being in the format:
local vendors = {
Asda = {Kellogg = true, Cadbury = true, Nestle = true, Johnsons = true, Pampers = true, Simple = true},
Tesco = {Kellogg = true, Cadbury = true, Nestle = true, Johnsons = true},
Spar ={Nestle = true, Johnsons = true, Pampers = true, Simple = true}
}
However, I am collecting the data by cycling through path locations and adding them into a table, which just creates a list such as:
Asda = {"Kellogg", "Cadbury", "Nestle", "Johnsons", "Pampers", "Simple"}
There is another way I can add them:
local Asda = {}
for index = 1, 9 do
local pathAsda = factReference -- some path location which changes by index increasing
if pathAsda ~= "" then
Asda[#Asda+1] = {[Asda] = true} -- table.insert(Asda, pathAsda), for the previously mentioned format
end
Which would leave me with:
Asda= {{Kellogg = true}, {Cadbury = true}, {Nestle = true}, {Johnsons = true}, {Pampers = true}, {Simple = true}}
I'd then use:
table.insert(vendorSources,Asda)
Neither of these formats work with the function in the answer and I can't seem to figure out how to amend any section to enable this to work.
function intersection(s1, s2) -- finds out if two sets (s1 & s2) overlap
local output = {}
for key in pairs(s1) do
output[#output + 1] = s2[key]
end
return output
end
Is there a way to edit either list (Asda) to be in the correct format?

Answer 1

You'd need to use Asda[pathAsda] = true instead of Asda[#Asda+1] = {[pathAsda] = true}, but keep in mind that the order elements is not guaranteed in this case.