Re: Sorting numerials first and then numerials with alpha characters last

Code is slopppy. Just learning.

That's fine - I will leave most of your code as it stands and put a Schwartzian Transform into your sort line. This produces your specified output - let's hope that's representative. :-)

require 5.000;

use warnings;
use strict;
use POSIX;

my %tags = ();

my $input = $ARGV[0];
my $output = $ARGV[1];


open (FILE, "< $input") or die "cannot open $input: $!\n";
   while (my $tag = <FILE>) {
    $tag =~ m/<t id=(\d*)(.*)((\d*)([[:alpha:]]*))>/;
    if ($tag eq "\n") {
        # BLANK LINE
    } else {
        $tag =~ m/<t id=\((\d*)(.*)((\d*)([[:alpha:]]*))\)>/;
        $tags{sprintf("%04d%6s",$1 || 9999,$2)} = $tag;
    }
   }
close FILE;

   open (NEWFILE, "> $output") or die "cannot open $output: $!\n";
   foreach my $id ( map { $_ = $_->[2] }
        sort { $a->[1] cmp $b->[1] || $a->[0] <=> $b->[0] }
        map { /(\d+)([a-z]*)/; $_ = [$1, $2, $_] }
        keys %tags )
   {
      print NEWFILE $tags{$id};
      print $tags{$id};
   }

close NEWFILE;
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Comment on Re: Sorting numerials first and then numerials with alpha characters last Download Code

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Re^2: Sorting numerials first and then numerials with alpha characters last (named captures)
by LanX (Saint) on Oct 29, 2021 at 19:14 UTC

> $_ = [$1, $2, $_]

But I felt tempted to try a variation with named captures for clarity. (tests borrowed from Hauke's post)

use strict;
use warnings;
use Data::Dump;
use Test::More;

my @in  =
  ( "2bc", "1", "12c", "12", "21", "1", "1a", "2", "2", "2",
    "2", "3", "35", "31", "2b", "4", "42", "5", "51", "2ac",
    "52", "6", "7"
  );



my @exp =
  ( "1", "2", "3", "4", "5", "6", "7", "12", "21", "31",
    "35","42", "51", "52", "1a", "2ac", "2b", "2bc", "12c",
  );


my %in;

@in{@in}=();                            # unique


my @got =
  map { $_->{orig} }
  sort { $a->{alpha} cmp $b->{alpha} || $a->{num} <=> $b->{num} }
  map { /(?<num>\d+)(?<alpha>[a-z]*)/; { orig => $_, %+ } }
  keys %in;


is_deeply(\@exp,\@got) or ddx [\@exp,\@got];
done_testing;
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Cheers Rolf
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