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Problem with logic in making a cross element for many tables.

edited June 16 in Code Sharing Posts: 815

Here’s my current code which works, but not like intended for more than 2 tables,

table.multiply = function(...)
    args = {...}
    local v = {}
    
    local function g(n, m, result) -- {a, {b, {c, ...}}} -> {a, b, c, ...}
        if m == 1 then
            return 
        else
            for a, b in ipairs() do
                
            end
        end
    end
    
    if #args == 0 then -- 0 = error
        return {}
    elseif #args == 1 then
        return args[1]
    elseif #args == 2 then
        local k = {}
        for a, b in ipairs(args[1]) do
            for c, d in ipairs(args[2]) do
                table.insert(k, {b, d})
            end
        end
        return k
    else
        local v = args
        
        while #v > 1 do
            local a = v[#v]
            local b = v[#v-1]
            local c = table.multiply(a, b)
            v[#v] = nil
            v[#v] = c -- new #v-1
        end
        
        --v = g(v, #args)
        
        return table.multiply(v)
    end
end

I’m trying to make something like below.

table.multiply({1, 2}, {3, 4}, {5, 6}) -> [{1, 3, 5}, {1, 3, 6}, {1, 4, 5}, ... {2, 4, 6}]

But in my mistake is apparently that the table doesn’t get unpacked like needed: {{1, 3}, 5} <- WRONG

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