Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask
 
PerlMonks  

Re^2: DB_File modes

by Anonymous Monk
on Feb 11, 2010 at 08:44 UTC ( #822605=note: print w/ replies, xml ) Need Help??


in reply to Re: DB_File modes
in thread DB_File modes

Be advised, on some versions/ports tie DOES NOT return the reference to the underlying object of the tie on success.

Um, tie always returns the reference to the underlying object, always.


Comment on Re^2: DB_File modes
Re^3: DB_File modes
by chuckbutler (Priest) on Feb 11, 2010 at 23:38 UTC

    ...Mostly on non-Unix platforms. You sometimes receive just a 1, true, on success. I have been burned on this a few times, but then again, I work with a lot of non-Unix distributions. Thanks. -c

      That is not a very convincing argument.
      Since you arent going to elaborate, I'll just go ahead and refute your claims

      DB_File has contained this code longer than perl 5.5 has existed. The situation you describe is nigh impossible (bless would have to fail and return 1, TIEHASH would have to fail and return 1).

      15 May 1997 http://search.cpan.org/~chips/perl5.004/

      07 May 1997 http://cpansearch.perl.org/src/PMQS/DB_File-1.14/DB_File.pm

      sub TIEHASH { my $pkg = shift ; bless { VALID => { map {$_, 1} qw( bsize ffactor nelem cachesize hash lorder) }, GOT => {} }, $pkg ; }

      If you intentionally return 1 , tied would return undef.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://822605]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chanting in the Monastery: (6)
As of 2014-08-23 01:54 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The best computer themed movie is:











    Results (171 votes), past polls