Make .unique(:with(&[===])) about 20% faster
Make .unique(:with(&[===])) about 20% faster

- based on a 100 element array with unique elements
- don't use nextwith, just return call to other candidate

usev6/rakudo,rakudo/rakudo,Gnouc/rakudo,salortiz/rakudo,tbrowder/rakudo,tbrowder/rakudo,rakudo/rakudo,tbrowder/rakudo,labster/rakudo,nbrown/rakudo,sjn/rakudo,sjn/rakudo,softmoth/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,raydiak/rakudo,awwaiid/rakudo,softmoth/rakudo,usev6/rakudo,tbrowder/rakudo,tony-o/rakudo,rakudo/rakudo,Gnouc/rakudo,usev6/rakudo,MasterDuke17/rakudo,lucasbuchala/rakudo,MasterDuke17/rakudo,softmoth/rakudo,MasterDuke17/rakudo,tony-o/rakudo,softmoth/rakudo,labster/rakudo,awwaiid/rakudo,MasterDuke17/rakudo,salortiz/rakudo,jonathanstowe/rakudo,usev6/rakudo,nbrown/rakudo,usev6/rakudo,lucasbuchala/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,awwaiid/rakudo,lucasbuchala/rakudo,salortiz/rakudo,nbrown/rakudo,raydiak/rakudo,labster/rakudo,salortiz/rakudo,tony-o/rakudo,jonathanstowe/rakudo,salortiz/rakudo,awwaiid/rakudo,salortiz/rakudo,nbrown/rakudo,raydiak/rakudo,sjn/rakudo,lucasbuchala/rakudo,labster/rakudo,Gnouc/rakudo,rakudo/rakudo,jonathanstowe/rakudo,rakudo/rakudo,tony-o/rakudo,nbrown/rakudo,awwaiid/rakudo,tony-o/rakudo,softmoth/rakudo,tbrowder/rakudo,sjn/rakudo,jonathanstowe/rakudo,tbrowder/rakudo,labster/rakudo,nbrown/rakudo,lucasbuchala/rakudo,rakudo/rakudo,labster/rakudo,Gnouc/rakudo,tony-o/rakudo,raydiak/rakudo,jonathanstowe/rakudo,sjn/rakudo