push(@a,pop(@myArrofArray));
print @a, I got ARRAY(0x858bd8)

expected output: @a = ('x', 'y', 'z', 8,9,7);
Can anyone point out the mistake?

A Perl 2D array is array of references to arrays. Above, you pop an array ref off of @myArrofArray and then push that array ref onto @a. So @a will contain a single element, a single scalar array reference.

Consider: 

my $array_ref = pop @myArrofArray;
print "@$array_ref\n";  #dereference the reference
push @a, @$array_ref;
print "@a\n";  #now @a contains the entire row of values

[download]
To print the values of a "row" in a 2D array, you have to "dereference" the reference.

PS: the "@a" and "@b" have special meanings within Perl, it is best to use x,y or something else.

Update: I got a few comments about not using @a or @b. My advice was an oversimplification. $a and $b have special meanings within Perl. It is completely allowed to use @a or %a - these do not have a special meaning. However I avoid those variables and recommend that others do the same. Leave the vars names a and b to Perl. This is to avoid any confusion. I guess you can have $a[0] which is first element of @a and that might be confused with $a which is completely different.

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

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