Sort of, yes. Except for a couple of details :)

First, by looping over the hash inside the while loop, you print out every value several times: once for every line of the input file.

Second, you haven't opened the output file yet, so you'll likely get an error.

The foreach loop itself is almost right, but you'd want to move it outside the while loop:

#!/usr/bin/perl -w

use strict; 
use diagnostics;
my %values = ();

unless (open (INFILE, "inputHash.txt")){ die "Cant open input.txt: $!"
+;}
# opens the file read only

while (<INFILE>){
    chomp;
    next unless (/\t/);
    my ($key, $value ) = split(/\t/, $_, 2);
    $values{$key}=$value;
}
close (INFILE);  #close input file

unless (open (OUTPUT, ">popHash.txt")){die "Cant open popHash.txt: $!"
+;}

foreach my $key (keys %values) {
    print OUTPUT "$key $values{$key}\n";
}
[download]

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&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.