Hi AFAIK it's not possible to produce a array or hashslice with an arrow dereference. 
no warnings;
$\="\n";
my $ar=[1..9];
print $ar->[1];
print $ar->[4..5]; # produces warning
print @$ar[4..5];
__END__
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I remember I read somewhere that perl5porters received a patch to enable it and that'll be probably enabled in 5.12.

Couldn't find any infos on this, does anyone have a deeper insight or maybe a link?

Cheers Rolf

In reply to Slicing with Arrow-Operator possible in 5.12? by LanX

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