Decimal digit property - What's it for?

From: Arcane Jill (arcanejill@ramonsky.com)
Date: Thu Nov 27 2003 - 10:45:22 EST

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    Hi,

    It has been explained to me that the "decimal digit" property has the
    following meaning: "Decimal numbers are those using in decimal-radix
    number systems. In particular, the sequence of the ONE character
    followed by the TWO character is interpreted as having the value of twelve".

    What's the point of such a property?

    I mean, it's quite clearly ignored in sentences like "My phone number is
    0044-1727-6000000", or "The codepoint of the space character is U+0020".

    What possible use could any mechanical algorithm make of the "decimal
    digit" property that it could not equally well make of the "digit" or
    "numeric" properties?

    Jill



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