use strict;
my @a;
my @b = ();
@a = (3, 4);
push @b, [@a];
my @c = @b[0];
print @c;
How do I properly retrieve @c? It tells me Scalar value @b[0] better written as $b[0].
(This isn't my real code for privacy reasons, but in the real code I have something like this:
my @a = @{$b[$i]};
print @a;
This says "Use of uninitialized value," but still prints what it's supposed to.
If you have an array reference stored in $b[0] - which is your situation - then you retrieve it as
$ref = $b[0] # I just want it as a reference
or
@arr = @{$b[0]} # I want it as a (new) array
or
$elt = $b[0][1] # I want to directly access the second element
$elt = $b[0]->[1] # alternative syntax, same thing.
For details on the syntax for array access see perldata
@c[0] is a single element array slice(!)
$c[0] is correct
$c[0]->[0] is "3" and $c[0]->[1] is "4"
For more details on arrays of arrays see perldsc and perllol
