On Wednesday 22 August 2001 13:40, Mark Maunder wrote:
> This is probably an oldie, but assigning an undef to a hash creates a hash
> with a single element (which I'm guessing is undef). Isn't this counter
> intuitive. I would have expected the hash to be empty if the undef that is
> assigned is in scalar context.
This:
#!/usr/bin/perl
use warnings;
use strict;
use Data::Dumper;
my %test = ( hi => 'hello' );
print Dumper( \%test );
undef %test;
print Dumper( \%test );
Yields:
$VAR1 = {
'hi' => 'hello'
};
$VAR1 = {};
Which is expected in my book.
If you mean assigning like this:
%test = undef;
You'll get an error, as expected.
If you mean assigning like this:
$test{'hi'} = undef
Then you'll get an undefined element, as expected.
Did this answer the question? Perhaps you could post a little sample code
that illustrates the question.
Regards,
Troy
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