On Monday, January 6, 2014 6:50:05 PM UTC-10, Robert Bradshaw wrote: > > By that logic, rather than preparsing 1/2 we should force the user to > write ZZ(1) / ZZ(2).
+1 It is important that the Sage REPL be easy to use with "mathematical" notation as far as possible. You should be able to input high precision floats in a natural way. But there is also a fundamental difference to the real literals here, "1/2" becomes a honest element of the rational ring whereas real literals just masquerade as elements of RR (using it as their parent) while not actually being 53-bit floats. In particular, this makes RR(1e-20) again a real literal (since the parent is the same), which is quite unexpected. Would it be possible to move real literals to their own parent? Arithmetic operations with other parents should always cast the literal to the other parent first, and arithmetic operations within the real literals would end up in RR. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/groups/opt_out.
