Re: get difference of two arrays

I was not able to run your programme (BTW, is it Estonian?). You should use variable names consistently ($quala is not $q is not $qa).

After fixing the errors, I just removed the square brackets around grep:

my @output = grep { ! exists $h{$_} } @a;
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Square brackets introduce an anonymous array. You want a list, not an array reference, so no square brackets needed.

لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

Comment on Re: get difference of two arrays Select or Download Code

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Re^2: get difference of two arrays by naturalsciences (Beadle) on Nov 14, 2013 at 13:49 UTC
Oh! Thanks. Yes it is Estonian :D. Somehow I posted even a more erroneus code that I have here working - (Probably trying to make it neat or remove some stuff - glad I did not remove the comments as it made it possible to use your lingusitics skill :D) #!/usr/bin/perl -w use strict; use warnings; use Data::Dumper; #kaks üheveerulist faili, prindib need veerud mis ühes on aga teises p +ole #ehk siis suurem fail miinus väiksem my $num_args = $#ARGV + 1; if ($num_args != 3) { print "\nUsage: ./lahutaja suurem väiksem vahe(output)\n"; exit; } my $fasta=$ARGV[0]; my $quala=$ARGV[1]; my $out=$ARGV[2]; open FA, "< $fasta"or die "Can't open $fasta: $!"; open QA, "< $quala" or die "Can't open $quala: $!"; open OUT,"> $out" or die "Can't open $out: $!"; my @bl = <QA>; my @a = <FA>; my %h; @h{@bl} = @bl; my @output=[grep {!exists $h{$_}} @a]; print Dumper @output ; print OUT @output; close FA; close QA; close OUT; [download] was the original half-working piece	[reply] [d/l]

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Re^2: get difference of two arrays
by naturalsciences (Beadle) on Nov 14, 2013 at 13:49 UTC

#!/usr/bin/perl -w
use strict;
use warnings;
use Data::Dumper;
#kaks üheveerulist faili, prindib need veerud mis ühes on aga teises p
+ole
#ehk siis suurem fail miinus väiksem
my $num_args = $#ARGV + 1;
if ($num_args != 3) {
  print "\nUsage: ./lahutaja suurem väiksem vahe(output)\n";
  exit;
}
my $fasta=$ARGV[0];
my $quala=$ARGV[1];
my $out=$ARGV[2];
open  FA, "< $fasta"or die "Can't open $fasta: $!";
open  QA, "< $quala" or die "Can't open $quala: $!";
open  OUT,"> $out" or die "Can't open $out: $!";
     


my @bl = <QA>;
my @a = <FA>;
my %h;

@h{@bl} = @bl;
my @output=[grep {!exists $h{$_}} @a];

print Dumper @output ;
print OUT  @output;



close FA;
close QA;
close OUT;
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[d/l]