explicit strong typing proper parameter lists active metadata on values, variables, subroutines, and types declarative classes with strong encapsulation

explicit strong typing proper parameter lists active metadata on values, variables, subroutines, and types declarative classes with strong encapsulation roles full OO exception handling support for the concurrent use of multiple versions of a module extensive introspection facilities (including of POD) LL and LR grammars (including a built-in grammar for Perl 6 itself) subroutine overloading multiple dispatch named arguments a built-in switch statement hierarchical construction and destruction distributive method dispatch method delegation named regexes overlapping and exhaustive regex matches within a string named captures parse-tree pruning incremental regex matching against input streams macros (that are implemented in Perl itself) user-definable operators (from the full Unicode set) chained comparisons a universally accessible aliasing mechanism lexical exporting (via a cleaner, declarative syntax) multimorphic equality tests state variables hypothetical variables hyperoperators (i.e. vector processing) function currying junctions (i.e. superpositional values, subroutines, and types) coroutines lazy lists strong module and language versioning concurrent object pipes http://www.perl6.org/archive/faq.html http://www.perl6.org/archive/faq.html