Lately been doing a bit with JSON as a config file. It is a convenient way to store config variables.
Procedural/Imperative style (untested, needs error handling, etc):
#!/usr/bin/perl
use strict;
use Path::Tiny qw (path);
use Data::Dumper;
use JSON;
my $file = "config/myfile.json";
my $DATA = decode_json path($file)->slurp_utf8;
OOP if it floats your boat (untested, needs error handling, etc):
#!/usr/bin/perl
use strict;
use Path::Tiny qw (path);
use JSON;
use Data::Dumper;
my $file = "./config/myfile.json";
my $json = new JSON;
my $data = Path::Tiny->new($file)->slurp;
print Dumper $json->decode($data);
print Dumepr $data;