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Re: It is not an array!

by premchai21 (Curate)
on Nov 18, 2002 at 04:42 UTC ( #213655=note: print w/replies, xml ) Need Help??

in reply to It is not an array!

My guess is that the object might not be being blessed properly, but without being able to see the Module::Name::new function, there's not much I (we?) can tell about it. Could you post it please?

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Re: Re: It is not an array!
by hardburn (Abbot) on Nov 19, 2002 at 01:38 UTC

    This was the constructor:

    sub new { my ($class, %parameters) = \@_; my $self = bless ({}, ref ($class) || $class); return ($self); }

    This came right out of ExtUtils::ModuleMaker. After reading some of the comments in this node, I flipped through the Camel and found this suggestion:

    sub new { my $invocant = shift; my $class = ref($invocant) || $invocant; my $self = { }; bless($self, $class); return $self; }

    Which appears to me to do basically the same thing (except it's not taking a hashref as a param, which shouldn't matter, and I don't need it anyway). However, the tests all pass with this version.

      I see what is going on now. This line:
      my ($class, %parameters) = \@_;
      makes a reference to the array @_, and assigns $class that reference. %parameters is left blank. Calling ref on an unblessed array reference returns ARRAY; the next line then blesses $self as ARRAY. Removing the backslash in the first line would cause $class to get the first argument, and %parameters to get the other arguments converted into a hash, which seems to be more what you want.

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