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Re: Basic Objects with Overloaded Operators

by Adam (Vicar)
on Feb 22, 2001 at 07:40 UTC ( #60123=note: print w/replies, xml ) Need Help??

in reply to Basic Objects with Overloaded Operators

This is a well written article on the wonders of overloading and OO. But I have one complaint:
unless( ref($b) =~ /\S/ ){}
Is not a good way to find out if a variable is a reference to a Complex or not. The better way is UNIVERSAL::isa(). Every OO class inherits from UNIVERSAL, and so you can always call $object->isa(), like this:
unless( $b->isa( 'Complex' ) ){}
Other then that nit-pick, this is a good tutorial.

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Re: Re: Basic Objects with Overloaded Operators
by perlmonkey (Hermit) on Feb 28, 2001 at 00:59 UTC
    Thanks for the comment! I have included the isa call into
    the root node. I wasn't familiar with isa when I wrote the
    article (many moons ago).
      unless(isa( $b, 'Complex' ) ) is more proper to cover the case when $b is not an object.

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