Hi perlmonks!

I am doing a traversing of filesystem and try to autovivificate the hash. The problem - I don't know how to insert multiple keys in hash: 

#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;

my %hash;

my $a="{5}{6}"; # path to insert

# trying to get $hash{root}{1}{5}{6}{2}="b";
$hash{root}{1}{$a}{2}="b";
print Dumper(%hash);

[download]

but I get $hash{root}{1}{'{5}{6}'}{2}="b". How to get $a interpolated as part of the "path" instead of single key?

Thanks!

In reply to Case of autovivification by resistance

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