Re^3: Filter array of hashes for specific keys

You want to push a hash reference and not a hash:

push @filtered_responsearr, \%filtered_response;
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Your code can be greatly simplified in some other places:

   my $response = shift;
   my @fields;
   foreach my $a (0..$#_) {
      $fields[$a]= shift; }
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can be rewritten as a single assignment:

my( $response, @fields ) = @_;
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Likewise, copying the elements of %response into the filtered response can be done using a hash slice instead of the loop:

@filtered_response{ @fields } = @response{ @fields }
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Re^4: Filter array of hashes for specific keys by Eily (Monsignor) on Oct 21, 2016 at 10:00 UTC
%filtered_response is declared only once in the function call, so every reference to it will be identical. `{ %filtered_response }` would work, but it would be better to move the declaration of %filtered_response inside the for loop. Or, with a recent enough version of perl, you can use a pairwise slice: `push @filtered_responsearr, { %response{ @fields } };`. With a postfix dereference: `push @filtered_responsearr, { $res->%{ @fields } }` Edit: I added the missing { } in the last line, to have a hash reference and not pairs of values.	[reply] [d/l] [select]
Re^4: Filter array of hashes for specific keys by ddominnik (Novice) on Oct 21, 2016 at 10:40 UTC
Wow, thanks for the tips, didn't know about hash slice. I'm just getting started so please forgive me my noobness. I tried what you said but it just gave me the same hash over and over, but Eily's answer solved that as well. Thanks to you both!	[reply]