comment on

For those who were interested in the problem, I was able to have the "new" code run in a "safe" way by forking... forking copies the symbol table and changes to it in the child process are not mirrored to the parent process.
Here's a quick snippet showing the method...

use Data::Dumper;
sub foo
{
   if ( open(FROM, "-|" ) )
   {
      # PARENT
      local($/);
      my $output = <FROM>;  # from the child
      my $retval = eval "$output";
      my @values = @$retval;

      return $values[0] if( @values == 1 );
      return @values;
   }
   else
   {
      # CHILD
      unshift( @INC, "/path/to/NEW");
      findAndRequire( 'My::Package' );
      my @output = My::Package::func();

      # local not really needed here, but who is counting
      local $Data::Dumper::Purity = 1;
      local $Data::Dumper::Terse = 1;
      print Dumper( \@output ); # to the parent
      exit;
   }
}

sub findAndRequire 
{
   my ($pkgName) = @_;

    $pkgName =~ s/::/\//g;

   # search @INC for a file which matches
   foreach my $dir (@INC) 
   {
      my $file = "${dir}/${pkgName}.pm";
      if( -e $file )
      {
         require "$file";
         last;
      }
   }
}

# Call our "proxied" function!
my $output = foo();
local $Data::Dumper::Purity = 1;
local $Data::Dumper::Terse = 1;

print "OUTPUT = " . Dumper( $output );
[download]

In reply to Re: How can I (safely) use packages of the same name but different versions? by xevian
in thread How can I (safely) use packages of the same name but different versions? by xevian

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


Do you know where your variables are?
	PerlMonks