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Questions on string-to-number conversion in Parrot
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Peter Gibbs
Sep 7, 2003, 4:57:35 AM9/7/03
to perl6-internals
Unicode specifies several different classes of numeric character. One of
these is decimal digit, which we handle using the is_digit and get_digit
functions; there are about 25 distinct flavours of these. Additionally, the
'other numeric' class includes numbers outside the digit range (e.g. circled
numbers from 10 to 50, and several fractions).
these is decimal digit, which we handle using the is_digit and get_digit
functions; there are about 25 distinct flavours of these. Additionally, the
'other numeric' class includes numbers outside the digit range (e.g. circled
numbers from 10 to 50, and several fractions).
Questions:
1) Should the string to number conversion handle these non-digit numeric
characters? Including fractions?
2) Given a consecutive string of digits from different ranges, should
conversion stop at the boundary?
i.e. should the sequence 'DIGIT ONE' 'DIGIT TWO' 'TAMIL DIGIT THREE' result
in twelve or one hundred and twenty three?
3) What should 'DIGIT ONE' 'VULGAR FRACTION ONE QUARTER' produce?
Any thoughts regarding signs, decimal points, exponent indicators etc. are
also welcome
--
Peter Gibbs
EmKel Systems
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