In Perl when you create a new derived class should you explicitly create a base instance inside the derived class constructor?
Here's a simple answer: yes, you should. You don't get 'base instance' automatically.

Longer version: I don't know Java, but I suppose Java's object is (a pointer to) a struct-like thing, and a derived class appends its part (instance variables or whatever Java calls them) to the 'base part'. OTOH, Perl's object is (a reference to) anything at all. For example, a string, a number, array, hash, function... There is no 'base instance' and 'derived instance', just 'instance'. Here's a function object:

$ perl -E 'sub method { my $self = shift; $self->() }
           my $obj = sub { say "HELLO" };
           bless $obj;
           $obj->method()'
HELLO

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In reply to Re: OOP and derived classes by Anonymous Monk
in thread OOP and derived classes by Anonymous Monk

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