How to save to a file lua

function saveHighScore(score)
    print("High score: "..tostring(score))
    local file,err = io.open("high_score.txt",'w')
    if file then
        file:write(tostring(score))
        file:close()
    else
        print("error:", err) -- not so hard?
    end
end

Source: stackoverflow.com

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