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,

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Re^2: hash assignment wierdness
by shmem (Chancellor) 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 =>


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