I have a file named "gene.txt", which looks like this GeneName GeneType 

APOL4   protein_coding

CYP2C8  protein_coding

NAALADL2    protein_coding

NANOS3  protein_coding

C20orf204   protein_coding

MIR429  miRNA

MIR200A miRNA

MIR200B miRNA

I have a file named "gene.txt", which looks like this

GeneName    GeneType

APOL4   protein_coding

CYP2C8  protein_coding

NAALADL2    protein_coding

NANOS3  protein_coding

C20orf204   protein_coding

MIR429  miRNA

MIR200A miRNA

MIR200B miRNA

[download]
i have read that file in perl and assigned the values to a hash. Now i want to get the keys or values from that file as i have assigned it to hash but i am unable to get those. my point is to i want to get keys by using the keys() method but its not printing the values on the left as keys and its not printing anything i don't know why i will be very thankful if anyone could help me. Thank you in advance.

#!/usr/bin/perl -w
use strict;
open FILE1, "/Desktop/gene.txt" or die;
my %hash;
while (my $line=<FILE1>) {

chomp $line;
# print $line,"\n";
(my $word1,my $word2) = split /:/, $line;

$hash{$word1} = $word2;
}
# Print hash for testinf purposes
while ( my ($k,$v) = each %hash ) {
    # print "Key $k  $v\n";
    @keys = keys(%hash);
    print @keys;
}

[download]

In reply to Getiing keys or values of a file based hash by shabird

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