loadTable

function loadTable(tableName)

    local data = nil
    if fs.exists(tableName) then
        local f = io.open(tableName, 'rb')
        local dat = f:read('*all')
        f:close()
        data = textutils.unserialise(dat)
    end
    return data
end

function writeTable(tableName, data)

    local f = io.open(tableName, 'wb')
    f:write(textutils.serialise(data))
    f:flush()
    f:close()
end

tables = {}
tables['load'] = loadTable
tables['write'] = writeTable