I've been humming and hawing about 179544 in my head all day. It just felt clumsy. So, after watching some excellent commentary in the CB, I was inspired to rewrite this using map and grep. I gotta say I am much happier with this. 

#! /usr/bin/perl

use strict;
use warnings;

open SIG, 'signal.txt' ;
my @sig = <SIG> ;
close SIG ;

chomp @sig ;

open ORD, 'orderednames.txt' ;
my @ord = <ORD> ;
close ORD ;


my @names = map { split } @ord ;
my %names_hash ;
$names_hash{$_} = 1 foreach @names ;

my @results = grep { !$names_hash{$_} } @sig ;

print join( ':', @results ), "\n" ;

[download]

Update: Fixed closing of wrong file handle. Thanks theorbtwo!

Update 2: Yep, it keeps getting shorter (Thanks again theorbtwo.) 

#! /usr/bin/perl

use strict;
use warnings;

open SIG, 'signal.txt' ;
chomp( my @sig = <SIG> ) ;
close SIG ;

open ORD, 'orderednames.txt' ;
my %names_hash ;
$names_hash{$_} = 1 foreach map { split } <ORD> ;
close ORD ;

my @results = grep { !$names_hash{$_} } @sig ;

print join( ':', @results ), "\n" ;

[download]

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In reply to Re: searching and printing what is wanted by DamnDirtyApe
in thread searching and printing what is wanted by snowy

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