SPUG: List

[Jim Flanagan]

--Also Sprache Martin Korb <mkorb at versuslaw.com> On Wednesday, July 11, 
2001 8:49 AM -0700:

     > my $citeList = [];
     >
     >      push @@$citeList, $with_something

  That should produce a compile-time error.

  A single @ should be fine. The notation '[]' creates a reference to an
  empty array, so now $citeList is an array reference. To actually push
  something onto the array that the reference points to, you have to fool
  push into thinking you actually have an array,

      push @{$citeList}, $with_something;

  But Perl allows a shorthand in the absence of ambiguity, and you can say

      push @$citeList, $with_something;

  and you can get that entry by saying

      $citeList->[0];
      # or
      ${$citeList}[0];

  Now, if you say

      push @{@$citeList}, $with_something;

  You get the same result as above, but you've made perl work a little
  harder for it.

SEE ALSO
  the perlref() manual page

--
Jim Flanagan          Collective Technologies
jimfl at colltech.com   http://www.colltech.com

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