Perl中@array->[4]或%hash->{key}行为的文档在哪里?

似乎这是在帕尔蒙克斯报道的: http://www.perlmonks.org/?node_id=171177

My reading of perlop has me convinced that this is an unintended
syntactic feature.

And that's exactly what it is. When using the arrow, Perl will see
whatever is left of it as a reference. Including if you have something
like @l or %h.

Note that you will get the warning
Using an array as a reference is deprecated in Perl 5.8.0.

  Abigail