Re: Perl 6 built-in types

[Larry Wall]

On Fri, Apr 28, 2006 at 04:41:41AM +0000, Luke Palmer wrote:
: It seems like a hash whose values are the unit type.  Does Perl have a
: unit type?  I suppose if it doesn't, we could define one:
: 
:    subtype Unit of Int where 1;
: 
: (Assuming that "where" groks whatever "when" does).
: 
: Then your mutable set is:
: 
:    my Hash of Unit $set;

Hmm, well, if values are just single-element subsets, then:

    my %set of 1;
    my 1 %set;

Larry