Re: Interval Comparisons

On 04/06/2024 04:14, Lawrence D'Oliveiro wrote:

Would it break backward compatibility for C to add a feature like this
from Python? Namely, the ability to check if a value lies in an interval:
      def valid_char(c) :
         "is integer c the code for a valid Unicode character." \
         " This excludes surrogates."
         return \
             (
                 0 <= c <= 0x10FFFF
             and
                 not (0xD800 <= c < 0xE000)
             )
     #end valid_char

See Chaining Comparisons
https://www.open-std.org/JTC1/SC22/WG21/docs/papers/2018/p0893r0.html
https://medium.com/@barryrevzin/chaining-comparisons-seeking-information-from-the-audience-abec909a1366
I don't know what are the current status of this proposal.