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Re: object oriented Perl advice / constructor creation in child class

by choroba (Cardinal)
on Jul 11, 2018 at 07:15 UTC ( [id://1218282] : note . print w/replies, xml ) Need Help??

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  1. or download this
    package MyA;
    
    ...
    sub a { shift->{a} }
    
    __PACKAGE__
    
  2. or download this
    package MyB;
    
    ...
    sub b { shift->{b} }
    
    __PACKAGE__
    
  3. or download this
    package MyC;
    
    ...
    use parent qw{ MyA MyB };  # Multiple inheritance, MyA takes precedenc
    +e
    
    __PACKAGE__
    
  4. or download this
    #!/usr/bin/perl
    use warnings;
    ...
    my $c = 'MyC'->new;
    print $c->a;
    print $c->b;  # uninitialized value
    
  5. or download this
    ($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
    }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,