my $hashref = {};
my $ref = \$hashref;
for (@foo) {
  $ref = \$$ref->{$_};
}
$$ref = 1; # or the value you want it to be
print Dumper $hashref;

[download]

update: this also works if you want to insert more than one array, while the backwards approach will likely destroy previously built data structures

In reply to Re: Array to nested hash by tinita
in thread Array to nested hash by amw1

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