libarray-unique-perl software package provides Tie-able array that allows only unique values, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libarray-unique-perl
libarray-unique-perl is installed in your system.
Make ensure the libarray-unique-perl package were installed using the commands given below,
$ sudo dpkg-query -l | grep libarray-unique-perl *
You will get with libarray-unique-perl package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Perl |
| Package | libarray-unique-perl |
| Version | 0.08-1 |
| Description | Tie-able array that allows only unique values |
| Sub Section | Perl |