Table to string in lua

table_to_string.lua

function table_to_string(tbl)
    local result = "{"
    for k, v in pairs(tbl) do
        -- Check the key type (ignore any numerical keys - assume its an array)
        if type(k) == "string" then
            result = result .. "[\"" .. k .. "\"]" .. "="
        end

        -- Check the value type
        if type(v) == "table" then
            result = result .. table_to_string(v)
        elseif type(v) == "boolean" then
            result = result .. tostring(v)
        else
            result = result .. "\"" .. v .. "\""
        end
        result = result .. ","
    end
    -- Remove leading commas from the result
    if result ~= "" then
        result = result:sub(1, result:len() - 1)
    end
    return result .. "}"
end