as a proof on concept 

use Data::Dumper qw/Dumper/;



sub flat (&@) {
  my ($code, @list) = @_;
 
  local ( $;, $_ ) = join_reliably (@list);
 
  $code->();
 
  return split $;, $_
}

sub join_reliably {
  # just a stub

  # TODO search for reliable delimiter
  my $delim="\0";

  return $delim, join ($delim, @_);
}


#------------------------------
#  examples
#------------------------------

@list= ("a".."c","DBIC","A".."C","DANCER","a".."c");

@newlist = flat { s/.*$;DBIC$;(.*)$;DANCER$;.*/$1/ } @list;
print Dumper \@newlist;

# DIMTOWTDI

@newlist = flat { m/DBIC$;(.*)$;DANCER/; $_=$1 } @list;
print Dumper \@newlist;

[download]
OUTPUT: 
$VAR1 = [
          'A',
          'B',
          'C'
        ];
$VAR1 = [
          'A',
          'B',
          'C'
        ];

[download]
UPDATE: maybe splitjoin() or sploin() are better names than just flat().

Cheers Rolf

In reply to Re^4: List::MoreUtils before, after and ... between? (1 regex) by LanX
in thread List::MoreUtils before, after and ... between? by Boldra

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