How to take tables as argument in function

[LastBacon00]

So, I was trying to compare elements of tables with each other in this function

function isTableSimilar(table1,table2)
local Subset = false
if #table1>#table2 then local BigTable= table1; local SmallTable = table2 else local BigTable = table2; local SmallTable = table1 end
for _,v in pairs(SmallTable) do
for _,s in pairs(BigTable) do

if v == s then Subset = true; break end

       end
if Subset == true then break
end
 Return Subset
end

But Error is arguments are nill value whenever I enter any table. How to do?

[PoppyandNeivaarecute]

Can you please show us how you are calling the function?

[LastBacon00]

local table = {"a","b","c"}
local Table = {"a","d"}

if isTableSimilar(table,Table) then print("done") end

[PoppyandNeivaarecute]

Probs not related to the issue, but avoid renaming built in functions (i.e. table)

Directly after function isTableSimilar(table1,table2), can you please output table1 and table2?

[Dev_Peashie]

theres many issues with that script, this task can be done easily.

Then you have 2 tables, one bigger than the other, and you want to find if theres a value inside the smaller table that exist in the bigger table too and return it?

-- 2 tables with random values, the only one shared is "apple"
local tableA = {"apple", "pera", "guayaba", "melon"}
local tableB = {"another fruit", "fruit in spanish", "apple"}

-- Function to find value in bigger table
function isTableSimilar(table1,table2)
	local BigTable
	local SmallTable
	
	if #table1 > #table2 then
		BigTable = table1
		SmallTable = table2
	else
		BigTable = table2;
		SmallTable = table1
	end
	
	for _, v in pairs(SmallTable) do
		if table.find(BigTable, v) then
			return v	
		end
	end
end

-- Calling the table checker function
local result = isTableSimilar(tableA, tableB)
-- the result
warn(result)

[LastBacon00]

Defining local variables inside function solved the problem just like in your code. This works too.

function isTableSimilar(table1,table2)
	local Subset = false
	local BigTable
	local SmallTable
	
	if #table1>#table2 then 
		 BigTable = table1;
	     SmallTable = table2;
	else
		local BigTable = table2;
		local SmallTable = table1
		
		end
	
	for _,v in pairs(SmallTable) do
		for _,s in pairs(BigTable) do

			if v == s then Subset = true; return Subset end

			end
	end
	return Subset
	end

[Dev_Peashie]

Obviously the main issue was defining variables inside the if statement, where cannot be reached by the rest of the code.
I was pointing that nesting loops inside loops for an easy task is not needed