ordinally, not cardinally. Ordinal means Order, Cardinal means Size.
And choosing "0" to mean "absent" is as arbitary and misguided (unless you are optimizing bits and cycles on a low-powered machine) as choosing "-1" to mean "absent"
And choosing "0" to mean "absent" is as arbitary and misguided (unless you are optimizing bits and cycles on a low-powered machine) as choosing "-1" to mean "absent"
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