After reading posts from fellow monks, see the following snippet. Beware, it is a "naive" approach.... but should work for a one time script.

use strict;     
use warnings;
# we don't want to get burned by stupid mistakes
#

use autodie;
# so that I can omit checking if open failed or succeeded. 
# not 100% bulletproof, but pretty damned close.

use Data::Dumper;
# https://metacpan.org/pod/Data::Dumper

open my $file, '<', 'file1';
# we assume that the file in question exists, is named 'file1', and is
+ in current folder

my %line_hash = map { chomp; $_ => undef } <$file>;
# create a hash out of lines in file.
#   best read from right to left.
#   <$file> = get all lines from file as an array
#   chomp = get rid of end of line character(s)
#   map = create key value pair, where key is the line
#
# see http://www.perlmonks.org/?node_id=20505
 
print Dumper \%line_hash;
# does it work?

[download]

In reply to Re: Load a single column file into a hash by jahero
in thread Load a single column file into a hash by vighneshmufc

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.