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Postings from June 2013
On Mon, Jun 10, 2013 at 2:27 PM, demerphq <demerphq@gmail.com> wrote:
> On 3 June 2013 14:06, Ruslan Zakirov <ruz@bestpractical.com> wrote:
> > HI,
> >
> > I've updated patches that add key/value hash slices to perl syntax:
> >
> > my %sub_hash = %hash{qw(some keys go here)};
>
> Sounds cool.
>
> However note that it is legal, but deprecated to write this:
>
> $ perl -le'my $hash={foo=>"bar"}; print %$hash->{foo};'
> Using a hash as a reference is deprecated at -e line 1.
> bar
>
> How does your patch impact this behavior?
>
./perl -Ilib/ -w -E 'my $h = { 1..10 }; say %$h->{3,5};'
Using a hash as a reference is deprecated at -e line 1.
Use of uninitialized value in say at -e line 1.
Corresponding op tree:
k <@> say vK ->l
a <0> pushmark s ->b
j <2> helem sK/2 ->k
d <1> rv2hv[t5] sKR/1 ->e
c <1> rv2hv[t4] sKR/1 ->d
b <0> padsv[$h:47,48] sM/DREFHV ->c
i <@> join[t6] sK/2 ->j
e <0> pushmark s ->f
- <1> ex-rv2sv sK/1 ->g
f <$> gvsv(*;) s ->g
g <$> const(IV 3) s ->h
h <$> const(IV 5) s ->i
Above is eqal to perl 5.16. I think it's correct to leave it this way.
--
Best regards, Ruslan.
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