Excuse me for keeping asking questions about this :) but it's for my own curiosity :

What could be the different ways to detect the kind of filehandle, to know if it was opened by open or opendir ?
Apparently, the following quote :

"DIRHANDLEs have their own namespace separate from FILEHANDLEs." (source)

could help detecting whether it was opened by open or opendir.
But when I do something like the following code to see the difference between the two namespaces, I get the same result for both of them.

open(DIR, './random_file');
print 'open : ', *main::DIR{NAME}, ' - ', *main::DIR{PACKAGE}, "\n";

opendir (DIR, '.');
print 'opendir : ', *main::DIR{NAME}, ' - ', *main::DIR{PACKAGE}, "\n"
+;
[download]

Am I doing something wrong, or is there another way to differentiate the namespaces of the handles ?
Or could it be the version of Perl I'm using ( 5.005 ) ?

Thanks