hash - perl compare files using hashes with multiple keys -



hash - perl compare files using hashes with multiple keys -

i have next script compare columns 2 files using hash.

but when there match between cols[5] $conversion , cols[2] $table, want print out value column in $conversion, namely corresponding value in cols[1]. i've tried assigning value cols[1] sec key in %hash, called $keyfield2. don't succeed in printing it. code far:

my %hash = (); while(<$conversion>){ chomp; @cols = split(/\t/); $keyfield = $cols[5]; $keyfield2 = $cols[1]; $hash{$keyfield,$keyfield2}++; } seek $table,0,0; #cursor resetting while(<$table>){ @cols = split(/\t/); $keyfield = $cols[2]; if (exists($hash{$keyfield})){ print $output "$cols[0]","\t","$hash{$keyfield2}","\t","$cols[1]\n"; } }

any hints on how this?

is there reason utilize hash reference. hash seek this:

my $keyfield = $cols[5]; $keyfield2 = $cols[1]; $hash{$keyfield} = $keyfield2

and print to:

print $output "$cols[0]","\t","$hash{$keyfield}","\t","$cols[1]\n";

perl hash

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