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Re: Re: Re: Often Overlooked OO Programming Guidelines

by hardburn (Abbot)
on Dec 29, 2003 at 22:00 UTC ( #317567=note: print w/replies, xml ) Need Help??


in reply to Re: Re: Often Overlooked OO Programming Guidelines
in thread Often Overlooked OO Programming Guidelines

Holding refs to subroutines seems like a perfectly good way to do private methods:

package Foo; . . . my $fiddle = sub { my $self = shift; return map { scalar reverse $_ } @_; }; sub wonk { my $self = shift; $self->$fiddle(@_); } package Bar; sub wonk { my $self = shift; $self->$fiddle(@_); # runtime error }

The real problem is that Perl doesn't have a good way of denoting protected methods or attributes. I don't consider litering your code with $obj->isa( . . . ) or die; to be a good way.

----
I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

: () { :|:& };:

Note: All code is untested, unless otherwise stated

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[1nickt]: my $x = $aohoaoh->[0]->{' foo'}->[0]->{'bar' }; should work
[thepkd]: its not $aohoaoh->[0]. its $aohoaoh[0]->{'foo '}. Tried it. Its working. Thnaks
[thepkd]: Hey 1nickt sorry man. What
[GotToBTru]: a ref too far ;)
[thepkd]: Yes this is my first time in cb. Trying to work my way around.
[JohnCub]: "A ref too far" would make a good title for anyone's perl memoirs
[thepkd]: Anyways it works with $aohoaoh[0]->{'foo '}[0]->{'bar'}

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