Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid
 
PerlMonks  

Re^3: Readonly problems ( Scalar::Readonly::readonly )

by runrig (Abbot)
on Dec 17, 2013 at 01:47 UTC ( [id://1067407]=note: print w/replies, xml ) Need Help??


in reply to Re^2: Readonly problems ( Scalar::Readonly::readonly )
in thread Readonly problems

Thanks, I don't really want to use readonly() though, I was just tracking down a bug involving DBI/DBD::Oracle. I tracked it down to code that went something like:
my $data = {}; my $sth = $dbh->prepare($sql); $sth->bind_param_inout(':foo' => \$data->{foo}, 10); while ( my ($k, $v) = each %hash ) { $data->{foo} = $k; $sth->execute(); }
And I got a 'modification of readonly value' error on the execute. Workaround is to modify the 'readonly' value before the execute with something like:
$k .= '';
Update: And for now, that whole thing needs a reset every few iterations, as execute() leaks memory with inout parameters.

Update2: And the previously mentioned 'leak' has been fixed in the latest release.

Replies are listed 'Best First'.
Re^4: Readonly problems ( Scalar::Readonly::readonly )
by choroba (Cardinal) on Dec 17, 2013 at 14:53 UTC
    Would the following also work?
    $data->{foo} = "$k";
    لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
      $data->{foo} = "$k";
      Yes, thanks, that does work. And is one of the few otherwise "useless use of quotes" that is not actually "useless" :-)
        You can always add a comment. :-)
        لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://1067407]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others wandering the Monastery: (7)
As of 2024-03-28 22:06 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found