Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery
 
PerlMonks  

Re: hash assignment wierdness

by DigitalKitty (Parson)
on Apr 20, 2007 at 16:00 UTC ( #611194=note: print w/ replies, xml ) Need Help??


in reply to hash assignment wierdness

Hi Bro. Doug.

As mentioned in the chatterbox by andye++, the Data::Dumper module, while not perfect, is a useful tool.

#!/usr/bin/perl use warnings; use strict; use Data::Dumper; my %hash = undef; print Dumper \%hash; #Output $VAR1 = { '' => undef };


Update: bart++ for suggesting a reference to %hash.

Hope this helps,
~Katie


Comment on Re: hash assignment wierdness
Download Code
Re^2: hash assignment wierdness
by shmem (Canon) on Apr 21, 2007 at 12:33 UTC
    The output of Data::Dumper is misleading here, as it looks like undef was assigned to the value, not the key. But it's the key that gets the scalar:
    qwurx [shmem] ~ > perl -le '%h = "one"; print "$_ => $h{$_}" for keys +%h' one =>

    --shmem

    _($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                                  /\_¯/(q    /
    ----------------------------  \__(m.====·.(_("always off the crowd"))."·
    ");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://611194]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others avoiding work at the Monastery: (13)
As of 2014-08-01 12:10 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    Who would be the most fun to work for?















    Results (12 votes), past polls