> This is getting more and more abstract and convoluted! Dynamic jump-levels? Come on...

I'm bored ... voila! 

use strict;
use warnings;
our $restore;

sub rec {
  my ($i) = @_;
  $i++;
  print ">> i=$i\n";
  if ($i <= 9) {
    target($i);
  }
  goto TARGET if $i > $restore;
  print "<< i=$i\n";
}

sub target{
  rec(shift);
 TARGET:
}

#--- Tests
for $restore (6,3){
  print "\n\n","-"x5," Restore at $restore\n";
  rec(0);
}

__END__

----- Restore at 6
>> i=1
>> i=2
>> i=3
>> i=4
>> i=5
>> i=6
>> i=7
>> i=8
>> i=9
>> i=10
<< i=6
<< i=5
<< i=4
<< i=3
<< i=2
<< i=1


----- Restore at 3
>> i=1
>> i=2
>> i=3
>> i=4
>> i=5
>> i=6
>> i=7
>> i=8
>> i=9
>> i=10
<< i=3
<< i=2
<< i=1

[download]

Again less and clearer code, and w/o generating dynamic labels with eval!

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re^12: Continuations in Perl - Returning to an arbitrary level up the call stack by LanX
in thread Continuations in Perl - Returning to an arbitrary level up the call stack by unlinker

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