Dave Whipp wrote: > An Int is Enumerable: each value that is an Int has well defined succ > and pred values. Conversely, a Real does not -- and so arguably should > not support the ++ and -- operators. Amonst other differences, a > Range[Real] is an infinite set, whereas a Range[Int] has a finite > cardinality.
++ and -- aren't meant to increment or decrement to the next/last value in the set, they're increment or decrement by one (see perlop). I can see your point about them not making sense for Real since it's not an enumerable set like integers but I don't think it would be in the spirit of DWIM to have to do: my Int $i = 5; say ++$i; and my Real $i = 5; # Or Num, Float or whatever say $i += 1; as that would be both inconsistent with Perl 5, C and every language that has ++/-- as well as being internally inconsistent in Perl 6 to have to use different constructs to increment by one for different number types. There's of course the argument that ++/-- aren't needed at all since they're really just relics from C where you needed them for pretty much every loop, although they're definitely usable almost everywhere where loop(;;) is appropriate in Perl 6 you don't need them as much as C, some other languages such as Python and Ruby don't have them at all, but that's a bit offtopic;) > (perhaps this discussion belongs on p6l) It sure does;)
