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The stupid question is the question not asked

The Concept of References

by leriksen (Curate)
on Apr 14, 2005 at 06:19 UTC ( #447659=perlmeditation: print w/replies, xml ) Need Help??

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  1. or download this
    $count = 10;
  2. or download this
    $copy = $count;
  3. or download this
    $ref = \$count; # initialise $ref's value to be a reference to $count
  4. or download this
    print "ref $ref\n";
    ref SCALAR(0x000003e8)
  5. or download this
    print "ref value $$ref\n";
    ref value 10
  6. or download this
    @array = (10, 20, 30);
  7. or download this
    @copy = @array;
  8. or download this
    $ref = \@array;
  9. or download this
    print "ref $ref\n";
    ref ARRAY(0x000003e8)
  10. or download this
    print $ref->[1];
  11. or download this
    print $$ref[1];
  12. or download this
    %hash = (a => 1, b => 2);
  13. or download this
    $ref = \%hash;
  14. or download this
    print "ref $ref";
    print $$ref{b};
  15. or download this
    $array[1] = @another; # nope - number of entries in @another is assign
    +ed to $array[1]
  16. or download this
    $array[1] = \@another;
    print $array[1]->[0]; # the first entry in the referenced array
  17. or download this
    sub func {
  18. or download this
    sub func {
       my ($aref) =@_;
  19. or download this
    $ref = \@array;
    print "ref $ref\n";

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Node Type: perlmeditation [id://447659]
Approved by BrowserUk
Front-paged by ghenry
[Lady_Aleena]: This evening, I thought to myself, "I would love to search Netflix for 100 randomfilms from my database to see if they have them." So I went to CPAN to see if there were a modiule which could do such a thing. There is, but GUH! ...
[Lady_Aleena]: ... Does it have to be that hard and complex to use to do a search on Netflix?
Lady_Aleena grumbles.
[Lady_Aleena]: I really need to get back into the swing of Perl. I'm forgetting things from lack of use. I don't know how behind I am too.

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