Oh, you meant runtime performance! Sorry, I completely failed to recognize that. I thought you meant the clunkiness of Perl 5 subroutine argument processing: 

      my ($foo, $bar, $baz);          # oops, forgot " = @_"
      my ($foo, $bar, $baz) = shift;  # oops, used shift() instead of 
+"@_"
      my $single_arg = @_;            # oops, will usually be 1

[download]

Perl6::Declare lets you declare subroutine/methods using Perl 6 signatures, which are lovely. I heard this turns out to actually be faster than Perl 5 calling conventions, but I can't say I fully understand why this is so.

In reply to Re^4: what would you like to see in perl5.12? by gaal
in thread what would you like to see in perl5.12? by ysth

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