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Postings from August 2013
# New Ticket Created by Ricardo SIGNES
# Please include the string: [perl #119437]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=119437 >
Perl 5.14.0 introduced this behavior, described in perl5140delta as:
Array and hash container functions accept references
Warning: This feature is considered experimental, as the exact
behaviour may change in a future version of Perl.
All builtin functions that operate directly on array or hash containers
now also accept unblessed hard references to arrays or hashes:
[table]
This allows these builtin functions to act on long dereferencing chains
or on the return value of subroutines without needing to wrap them in
"@{}" or "%{}":
The behavior of autoderef changed between David Golden's original work and the
final shipped product.
Specific questions:
* do we revert the behavior changes, at least in some cases?
* do we add an 'experimental' warning for perl 5.20 if the experiment isn't
"accepted" yet by then?
* does this feature stick around if postfix deref is added
On the third point, my current thought is that it seems like removing it just
because a maybe-better form came around is going to lead to the same kind of
groaning that we've gotten with the addition of warnings for ~~ in perl 5.18.0.
Is it worth that? Current thoughts on *that*: I really don't know. It's not
like the feature will not be useful anyway...
Anyway, the general question is the same as any other [EXPERIMENT] ticket:
What are the criteria for accepting or rejecting this experiment?
--
rjbs
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