I think it's a pretty great 1st start. And you *can* have a slurpy arg in the
final position. Plus everything's still in @_ if you want to be traditional or
modify stuff using topic variables.
On Friday, February 21, 2014 9:05 AM, B. Estrade <[email protected]> wrote:
So I guess with the signatures, the answer is "it depends" since it'll work
with signatures as one might expect (i.e., the flattened array would have to
have each element correspond to a sig parameter) or the sig parameter may very
well be data type passed by reference.
I read up on the signature thing, and I doubt I'll find it useful for anything.
It's also experimental, so requires an explicit feature 'use' and can be taken
out at any time.
http://search.cpan.org/~tonyc/perl-5.19.9/pod/perlsub.pod#Signatures
It seems a squishy and a little general, maybe it'd be better if one could
specific the Perl data type (scalar, hashref, arrayref, etc) via the signature
definition.
Brett
On Fri, Feb 21, 2014 at 8:03 AM, Uri Guttman <[email protected]> wrote:
On 02/21/2014 08:13 AM, B. Estrade wrote:
>
>On Wed, Feb 19, 2014 at 2:35 PM, Mark Allen <[email protected]> wrote:
>>
>>
>>When subroutine signatures are released in 5.20, you'll be able to do
>>>
>>>sub foo ($self, $foo, $bar, $baz) {
>>> $foo ||= 'default';
>>> $baz //= 0;
>>>
>>> ...;
>>>}
>>>
>>>Yay!
>>>
>>>
>>
>>How will this behave if you call the method with foo(@a,@b,@c,@d) versus
>>foo(\@a,\@b,\@c,\@d) ? Does list flattening still occur in this case
>>necessitating the use array references if you want to pass one array per
>>parameter?
>>
>>
>
sub calls always flatten into @_. the only way to pass individual arrays is by
reference. prototypes (not recommended in most cases) do allow arrays to be
parsed as single args but they are actually passed as references.
>
>
>uri
>
>
>--
>Uri Guttman - The Perl Hunter
>The Best Perl Jobs, The Best Perl Hackers
>http://PerlHunter.com
>
>_______________________________________________
>Houston mailing list
>[email protected]
>http://mail.pm.org/mailman/listinfo/houston
>Website: http://houston.pm.org/
>
_______________________________________________
Houston mailing list
[email protected]
http://mail.pm.org/mailman/listinfo/houston
Website: http://houston.pm.org/_______________________________________________
Houston mailing list
[email protected]
http://mail.pm.org/mailman/listinfo/houston
Website: http://houston.pm.org/
