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Postings from July 2013
With the recent discussion about deprecation and removal of bare <<, I went
to look for other dusty corners of perl which have been marked as
'deprecated' for many years but are still in the language. I took 5.10.0
as the base version and grepped.
I have excluded from the list below deprecations affecting XS code or
perl internals, or core modules.
my $x if 0; # since 5.9.1
defined(@x) and defined(%h) # since 5.6.1 or earlier
sub foo {} do foo(1,2) # since 5.10 or earlier
chdir('') # since 5.10 or earlier
%h->{a} and @a->[5] # since 5.7.2; code committed 2001-05-08
?PATTERN? # since 5.10 or earlier
$[ = 5; # since 5.10 or earlier
dump # since 5.8
Unrecognized escape \8 # since 5.8
sub foo (@bar) {} # since 5.8
::DESTROY # code committed 2002-03-16
use UNIVERSAL; # since 5.004_02
If the perl5-porters wish it, I can file RT bugs for these, together or
separately.
In my experience the first two constructs still regularly appear in
beginner code, and for that reason it would be good to finally disallow
them.
--
Ed Avis <eda@waniasset.com>
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