On Fri, Nov 18, 2016 at 2:05 PM, Guillaume Laforge <glafo...@gmail.com> wrote:
> > On Fri, Nov 18, 2016 at 1:58 PM, Jochen Theodorou <blackd...@gmx.org> > wrote: > >> >> >> On 18.11.2016 13:45, Daniel Sun wrote: >> >>> Hi all, >>> >>> The new parser(Parrot) supports negative relational operators now, >>> which is proposed by Guillaume Laforge :) >>> >>> Here are some example >>> codes(https://github.com/danielsun1106/groovy-parser/blob/ne >>> gativeRelationalOperators/src/test/resources/core/NegativeRe >>> lationalOperators_01x.groovy): >>> >>> assert 'a' instanceof String >>> assert 'a' !instanceof Integer >>> assert 1 <= 2 >>> assert 2 !<= 1 >>> assert 2 >= 1 >>> assert 1 !>= 2 >>> assert 1 < 2 >>> assert 2 !< 1 >>> assert 2 > 1 >>> assert 1 !> 2 >>> assert 1 in [1, 2] >>> assert 3 !in [1, 2] >>> >> >> I think !instanceof and !in are ok. The others... not sure here. Right >> now a<b uses the same method as a>=b, which means !< is >=. And in this >> case I actually prefer >=. >> > > For instanceof and in, that's nice, but I think it's too cryptic for the > other ones, which do exist in a different form, as currently !< is just >=, > as Jochen says. > In terms of "groovy style", I think I'd prefer to have the ! sticking to in and instanceof. It might also be less confusing to parse, should we some day add something like a factorial operator, or some other use for the ! -- Guillaume Laforge Apache Groovy committer & PMC Vice-President Developer Advocate @ Google Cloud Platform Blog: http://glaforge.appspot.com/ Social: @glaforge <http://twitter.com/glaforge> / Google+ <https://plus.google.com/u/0/114130972232398734985/posts>
