Having a bit of a guess here but could it be that you need to push the array rather than a reference to the array? The following might illustrate the difference. Note that after the first push @AoA has three elements, the last of which is a reference to @newArr, but there are five after I pop off the array reference and do the second push of the array rather than a reference to it, the last three being the same values as are in @newArr.

johngg@shiraz:~/perl/Monks$ perl -Mstrict -Mwarnings -MData::Dumper -E
+ '
my @AoA = (
   [ 1, 2, 3 ],
   [ qw{ a b c } ],
   );

say Data::Dumper->Dumpxs( [ \ @AoA ], [ qw{ *AoA } ] );

my @newArr = qw{ x y z };
push @AoA, \ @newArr;

say Data::Dumper->Dumpxs( [ \ @AoA ], [ qw{ *AoA } ] );
say $AoA[ -1 ];
say qq{@{ $AoA[ -1 ] }};

pop @AoA;
push @AoA, @newArr;

say Data::Dumper->Dumpxs( [ \ @AoA ], [ qw{ *AoA } ] );'
@AoA = (
         [
           1,
           2,
           3
         ],
         [
           'a',
           'b',
           'c'
         ]
       );

@AoA = (
         [
           1,
           2,
           3
         ],
         [
           'a',
           'b',
           'c'
         ],
         [
           'x',
           'y',
           'z'
         ]
       );

ARRAY(0x555eb3457760)
x y z
@AoA = (
         [
           1,
           2,
           3
         ],
         [
           'a',
           'b',
           'c'
         ],
         'x',
         'y',
         'z'
       );

[download]

I hope this is helpful.

Update: Expanded explanation.

Cheers,

JohnGG

In reply to Re: Push array into array of arrays by johngg
in thread Push array into array of arrays by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.