G'day walkingthecow,

You were almost there. I suspect the unnecessary @fields is possibly what threw you (as that does seem to have complicated the code somewhat). To achieve what you want, change all of this: 

my @fields;
my $uuts = {};
while(<$fh>) {
    chomp;
    next if !-e "/tmp/files/$_.json";
    my $decoded = decode_json( read_file("/tmp/files/$_.json") );
    push @fields, $decoded;
}
$uuts->{People} = [ @fields ];

[download]

to just this:

my $uuts;
while (<$fh>) {
    chomp;
    next if ! -e "/tmp/files/$_.json";
    push @{$uuts->{People}}, @{decode_json(read_file("/tmp/files/$_.js
+on"))};
}

[download]

I'm not really in a position to test that; however, here's a small test that shows the technique involved: 

$ perl -Mstrict -Mwarnings -le '
    use Data::Dumper;
    my @jsons = ([{a=>1}, {b=>2}], [{c=>3}, {d=>4}]);
    my $combo;
    for (@jsons) {
        print Dumper $_;
        push @{$combo->{People}} => @$_;
    }
    print Dumper $combo;
'
$VAR1 = [
          {
            'a' => 1
          },
          {
            'b' => 2
          }
        ];

$VAR1 = [
          {
            'c' => 3
          },
          {
            'd' => 4
          }
        ];

$VAR1 = {
          'People' => [
                        {
                          'a' => 1
                        },
                        {
                          'b' => 2
                        },
                        {
                          'c' => 3
                        },
                        {
                          'd' => 4
                        }
                      ]
        };

[download]

-- Ken

In reply to Re: Merging multiple JSON files into one using JSON::XS by kcott
in thread Merging multiple JSON files into one using JSON::XS by walkingthecow

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