Perl6 RFC Librarian wrote:
> The first component of a pair would be called its C<key>, and the second, it's
> C<value>. It is proposed to either extend the semantics of C<keys> and
> C<values> to allow them to operate of pair references, or else introduce
> two new built-ins -- C<key> and C<value> -- to access the components of a pair.
> =head2 Pairs and arrays
>
> When a pair reference is assigned (in)to an array, it remains a single scalar
> (referential) value. So:
>
> @array = ( a=>1, b=>2, 'c', 3 );
>
> assigns four elements (not six) to @array.
How do we get keys and values out?
print $array{a}; # 1
print $array{c}; # undef? 3?
print $array[0]; # 1? a? a=>1?
print $array[2]; # c
print join ',', keys @array; # a,b? a,b,c?
print join ',', values @array; # 1,2,c,3? 1,2,3?
Or are hash operations syntax errors on @array?
print value $array[0]; # 1
print join ',', map {key} @array; # a,b? a,b,,?
Jon
--
Knowledge is that which remains when what is
learned is forgotten. - Mr. King
