Yes, but unneccessarily complicated. Since you can assign a hash to an array and it will do the sensible thing, your code can be shortened to

use strict;
use warnings;
use Data::Dumper;

my @array=('a',0,'b',0,'c',0);
my %hash=('a'=>1 , 'b' =>2 , 'c'=>3,);
%hash=@array;
print Dumper \%hash;

[download]

Your version has the advantage that if some of the keys should change, you still would reset them to 0. If you want to reset all values to 0 you don't need the array anymore:

@hash{keys %hash}=(0) x scalar(keys %hash);

[download]

CORRECTION:Forgot () around the 0. And as cdarke pointed out to me the scalar is not needed as it is already in scalar context. But I tend to play safe with these things instead of trusting my memory

In reply to Re^3: re-initialize the hash by jethro
in thread re-initialize the hash by vennila

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