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Postings from July 2001
> Jeffrey Friedl laid this on us:
> I have long wished that I could mark a hash such that no new keys could
> be added to it -- sort of like a "use strict" for hashes in that if you
> intended
> $foo->{Quiet} = 1;
> and by accident typed
> $foo->{Quite} = 1;
> you'd get an error.
You have my vote. As I noted some time ago,
I all too often write
use strict;
sub setsomething {
my ($self, $value); # = @_ omitted by accident
$self->{something} = $value;
}
and $self autovivifies so there's no warning. If I can somehow
force $self to be ``clamped'', I could get the warning I wanted.
-- jpl
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