You've got TWO problems. You need to limit the arguments to the grep(), and you need to use an array reference, not a list, as the value of the 'driver' key in the hash. In fact, by doing the second one, you do the first. 
my %hash = (
  driver => [ grep $p{rdbms} eq $_, Alzabo::Driver->available ],
  rules  => scalar(grep $p{rdbms} eq $_, Alzabo::RDBMSRules->available
+) ? 'yes' : 'no',
  rules2 => scalar(grep $p{rdbms} eq $_, Alzabo::RDBMSRules->available
+),
);

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Jeff[japhy]Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area)
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In reply to Re: scalar grep not binding hash slots by japhy
in thread scalar grep not binding hash slots by princepawn

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