You missed with your curlies; you are going to store an array reference in $hoh{'word'}{'array'}, and then dereference that, so curlies go around the whole expression. 
use strict;
use warnings;
use 5.10.0;

my %hoh;
my @arr = ('first', 'second', 'third');
push (@{$hoh{'word'}{'array'}}, @arr); #now good
$hoh{'word'}{'count'} += 1;
$hoh{'word'}{'count'} += 1;

say "The count of 'word' is ", $hoh{'word'}{'count'};
say "The array of 'word' is @{$hoh{'word'}{'array'}}"; # now good.

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See perlreftut and/or perllol. Note also I moved your array into the double quotes, so it interpolates w/ spaces (by default).

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re: Push to an array in a hash of hashes by kennethk
in thread Push to an array in a hash of hashes by Endless

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