Patrick R. Michaud wrote:
> There are quite a few tests in the spectest suite that
> make mention of "arrayref" and "hashref", and that expect
> things to work like references do in Perl 5. I'd like to
> get some confirmation/clarification on them.
>
> Here's one example:
>
> my $foo = [ 42 ];
> my $bar = { a => 23 };
> $foo[1] = $bar;
> $bar<b> = 24;
>
> say $foo[1]<b>; # "24" or undef ???
>
> The test suite expects "24" to be output here, treating
> treating C< $foo[1] > as a reference to the hash in
> C<$bar>, such that any changes to C<$bar> are also reflected
> in C<$foo[1]>. Is this correct Perl 6?
IMHO yes. Remember that $foo is really just an Array object, just like
any other object. Why should Array objects be cloned on assignment? If
you do a
@a = @b
you get cloning behaviour because the @ sigil implies a container type,
whereas a with a $ sigil you just hand references to objects.
> I would somewhat expect
> a reference to be instead handled using a statement like
>
> $foo[1] := $bar;
>
> Comments and clarifications appreciated.
>
> Pm
--
Moritz Lenz
http://moritz.faui2k3.org/ | http://perl-6.de/
