Number of characters is best. It shows the compressibility of the
language, as well as the solution. Eg Arthur notes, with some pride,
that running his K code through a zip compressor yields no benefit.
Hopefully such a goal is attainable in J.Perhaps someday inflected
vocabulary can have single unicode alternatives... Then it will be
like the old days with APL keyboards. With a character metric we can
have cross language comparisons.
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