Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"
 
PerlMonks  

RE: RE: RE: undefs and functions

by perlmonkey (Hermit)
on Aug 02, 2000 at 21:32 UTC ( #25790=note: print w/ replies, xml ) Need Help??


in reply to RE: RE: undefs and functions
in thread undefs and functions

I maybe barking up the wrong tree, but I think I got your error. It took a bit of rooting around. Normally if the scalar is just a normal hash it should autovivify. Here is an autovivification example:

my $foo = { }; $foo->{a}->{b}->{c}->{d} = 1; use Data::Dumper; print Data::Dumper->Dump([$foo],['foo']);
Results:
$foo = { 'a' => { 'b' => { 'c' => { 'd' => 1 } } } };
All those keys were undef, but now they were created just by asking for them.

I got your error only when I tried to turn an undef into a hash reference explicitly:print %{$foo->{a}->{d}}
So maybe making it into a two step process:
my $bar = $foo->{a}->{d}; print %$bar if $bar;
that might take care of your errors. If I totally missed your problem, sorry.


Comment on RE: RE: RE: undefs and functions
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://25790]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chanting in the Monastery: (4)
As of 2015-07-04 05:26 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (57 votes), past polls